/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=BIGGEST -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 13:27:47,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:27:47,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:27:47,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:27:47,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:27:47,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:27:47,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:27:47,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:27:47,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:27:47,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:27:47,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:27:47,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:27:47,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:27:47,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:27:47,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:27:47,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:27:47,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:27:47,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:27:47,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:27:47,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:27:47,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:27:47,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:27:47,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:27:47,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:27:47,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:27:47,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:27:47,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:27:47,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:27:47,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:27:47,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:27:47,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:27:47,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:27:47,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:27:47,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:27:47,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:27:47,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:27:47,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:27:47,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:27:47,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:27:47,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:27:47,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:27:47,786 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 13:27:47,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:27:47,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:27:47,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:27:47,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:27:47,811 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:27:47,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:27:47,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:27:47,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:27:47,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:27:47,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:27:47,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:27:47,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:27:47,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:27:47,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:27:47,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:27:47,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:27:47,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:27:47,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:27:47,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:27:47,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:27:47,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:27:47,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:27:47,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:27:47,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:27:47,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:27:47,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:27:47,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 13:27:47,815 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:27:48,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:27:48,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:27:48,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:27:48,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:27:48,159 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:27:48,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 13:27:48,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b4ce975/f16f1c1933cd40abbb7b81ee9add52c9/FLAG69dbcc113 [2020-08-18 13:27:48,957 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:27:48,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 13:27:48,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b4ce975/f16f1c1933cd40abbb7b81ee9add52c9/FLAG69dbcc113 [2020-08-18 13:27:49,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b4ce975/f16f1c1933cd40abbb7b81ee9add52c9 [2020-08-18 13:27:49,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:27:49,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:27:49,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:27:49,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:27:49,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:27:49,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:27:49" (1/1) ... [2020-08-18 13:27:49,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae6b0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:49, skipping insertion in model container [2020-08-18 13:27:49,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:27:49" (1/1) ... [2020-08-18 13:27:49,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:27:49,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:27:49,648 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 13:27:49,649 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 13:27:50,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:27:50,431 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:27:50,486 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 13:27:50,487 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 13:27:50,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:27:50,756 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:27:50,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50 WrapperNode [2020-08-18 13:27:50,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:27:50,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:27:50,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:27:50,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:27:50,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:50,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:50,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:50,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:50,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:51,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:51,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (1/1) ... [2020-08-18 13:27:51,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:27:51,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:27:51,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:27:51,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:27:51,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (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 13:27:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:27:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:27:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 13:27:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-08-18 13:27:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 13:27:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-18 13:27:51,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-08-18 13:27:51,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-08-18 13:27:51,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-08-18 13:27:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-08-18 13:27:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-18 13:27:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-18 13:27:51,203 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-18 13:27:51,206 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-18 13:27:51,206 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-18 13:27:51,206 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 13:27:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 13:27:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:27:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 13:27:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 13:27:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 13:27:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-08-18 13:27:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-08-18 13:27:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-08-18 13:27:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-08-18 13:27:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-08-18 13:27:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-08-18 13:27:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-08-18 13:27:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-08-18 13:27:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-08-18 13:27:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-08-18 13:27:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-08-18 13:27:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:27:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 13:27:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 13:27:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 13:27:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 13:27:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 13:27:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 13:27:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 13:27:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 13:27:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-08-18 13:27:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-08-18 13:27:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-08-18 13:27:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-08-18 13:27:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-08-18 13:27:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-08-18 13:27:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-08-18 13:27:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 13:27:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-18 13:27:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 13:27:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-08-18 13:27:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-08-18 13:27:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 13:27:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-18 13:27:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-18 13:27:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-18 13:27:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-18 13:27:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-18 13:27:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-18 13:27:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-18 13:27:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 13:27:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 13:27:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 13:27:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 13:27:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 13:27:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 13:27:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 13:27:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 13:27:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 13:27:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 13:27:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:27:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:27:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 13:27:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 13:27:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 13:27:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 13:27:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 13:27:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 13:27:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 13:27:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 13:27:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 13:27:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-08-18 13:27:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-08-18 13:27:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 13:27:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-08-18 13:27:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-08-18 13:27:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-08-18 13:27:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-08-18 13:27:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 13:27:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-08-18 13:27:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-08-18 13:27:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-08-18 13:27:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-08-18 13:27:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:27:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:27:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 13:27:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 13:27:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:27:52,084 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 13:27:53,971 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:27:53,971 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 13:27:53,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:27:53 BoogieIcfgContainer [2020-08-18 13:27:53,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:27:53,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:27:53,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:27:53,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:27:53,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:27:49" (1/3) ... [2020-08-18 13:27:53,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c121f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:27:53, skipping insertion in model container [2020-08-18 13:27:53,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:50" (2/3) ... [2020-08-18 13:27:53,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c121f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:27:53, skipping insertion in model container [2020-08-18 13:27:53,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:27:53" (3/3) ... [2020-08-18 13:27:53,997 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 13:27:54,010 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:27:54,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:27:54,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:27:54,074 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:27:54,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:27:54,075 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:27:54,075 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:27:54,075 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:27:54,075 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:27:54,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:27:54,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:27:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-08-18 13:27:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 13:27:54,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:27:54,135 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 13:27:54,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:27:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:27:54,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-08-18 13:27:54,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:27:54,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876010651] [2020-08-18 13:27:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:27:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:55,224 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:27:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:55,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:27:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:55,372 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 13:27:55,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876010651] [2020-08-18 13:27:55,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:27:55,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:27:55,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386185984] [2020-08-18 13:27:55,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:27:55,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:27:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:27:55,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:27:55,398 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-08-18 13:27:56,146 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-08-18 13:28:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:03,434 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-08-18 13:28:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 13:28:03,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 13:28:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:03,462 INFO L225 Difference]: With dead ends: 1648 [2020-08-18 13:28:03,462 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 13:28:03,476 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 13:28:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 13:28:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-08-18 13:28:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-18 13:28:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-08-18 13:28:03,678 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-08-18 13:28:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:03,678 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-08-18 13:28:03,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:28:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-08-18 13:28:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 13:28:03,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:03,682 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 13:28:03,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:28:03,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:03,683 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-08-18 13:28:03,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:03,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623251048] [2020-08-18 13:28:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,265 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:28:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 13:28:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:04,469 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 13:28:04,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623251048] [2020-08-18 13:28:04,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:04,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 13:28:04,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407190183] [2020-08-18 13:28:04,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 13:28:04,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:04,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 13:28:04,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 13:28:04,475 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-08-18 13:28:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:10,463 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-08-18 13:28:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 13:28:10,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 13:28:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:10,474 INFO L225 Difference]: With dead ends: 1640 [2020-08-18 13:28:10,474 INFO L226 Difference]: Without dead ends: 864 [2020-08-18 13:28:10,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:28:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-18 13:28:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-08-18 13:28:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-08-18 13:28:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-08-18 13:28:10,619 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-08-18 13:28:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:10,619 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-08-18 13:28:10,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 13:28:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-08-18 13:28:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 13:28:10,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:10,623 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 13:28:10,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:28:10,623 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-08-18 13:28:10,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:10,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310400111] [2020-08-18 13:28:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,140 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 13:28:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 13:28:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:11,320 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 13:28:11,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310400111] [2020-08-18 13:28:11,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:28:11,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 13:28:11,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472776960] [2020-08-18 13:28:11,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:28:11,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:11,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:28:11,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:28:11,322 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-08-18 13:28:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:18,104 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-08-18 13:28:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 13:28:18,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-08-18 13:28:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:18,114 INFO L225 Difference]: With dead ends: 1674 [2020-08-18 13:28:18,115 INFO L226 Difference]: Without dead ends: 894 [2020-08-18 13:28:18,119 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 13:28:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-18 13:28:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-08-18 13:28:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-08-18 13:28:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-08-18 13:28:18,236 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-08-18 13:28:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:18,237 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-08-18 13:28:18,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:28:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-08-18 13:28:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 13:28:18,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:18,246 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 13:28:18,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:28:18,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-08-18 13:28:18,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:18,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669675395] [2020-08-18 13:28:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,722 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 13:28:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 13:28:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:18,932 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 13:28:18,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669675395] [2020-08-18 13:28:18,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:28:18,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 13:28:18,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648504278] [2020-08-18 13:28:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:28:18,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:18,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:28:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:28:18,939 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-08-18 13:28:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:26,478 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-08-18 13:28:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 13:28:26,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-08-18 13:28:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:26,486 INFO L225 Difference]: With dead ends: 1734 [2020-08-18 13:28:26,487 INFO L226 Difference]: Without dead ends: 924 [2020-08-18 13:28:26,490 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 13:28:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-18 13:28:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-08-18 13:28:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-18 13:28:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-08-18 13:28:26,606 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-08-18 13:28:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:26,607 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-08-18 13:28:26,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:28:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-08-18 13:28:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 13:28:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:26,610 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 13:28:26,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:28:26,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-08-18 13:28:26,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:26,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185971596] [2020-08-18 13:28:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,043 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 13:28:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:28:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:27,236 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 13:28:27,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185971596] [2020-08-18 13:28:27,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:28:27,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 13:28:27,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65174270] [2020-08-18 13:28:27,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:28:27,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:28:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:28:27,239 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-08-18 13:28:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:33,705 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-08-18 13:28:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:28:33,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-08-18 13:28:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:33,713 INFO L225 Difference]: With dead ends: 1794 [2020-08-18 13:28:33,713 INFO L226 Difference]: Without dead ends: 954 [2020-08-18 13:28:33,716 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 13:28:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-08-18 13:28:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-08-18 13:28:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-08-18 13:28:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-08-18 13:28:33,826 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-08-18 13:28:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:33,827 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-08-18 13:28:33,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:28:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-08-18 13:28:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 13:28:33,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:33,829 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 13:28:33,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:28:33,829 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-08-18 13:28:33,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:33,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067149434] [2020-08-18 13:28:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,278 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 13:28:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 13:28:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:34,492 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 13:28:34,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067149434] [2020-08-18 13:28:34,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:28:34,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 13:28:34,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634036984] [2020-08-18 13:28:34,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:28:34,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:34,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:28:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:28:34,495 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-08-18 13:28:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:43,102 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-08-18 13:28:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 13:28:43,106 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-08-18 13:28:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:43,114 INFO L225 Difference]: With dead ends: 1854 [2020-08-18 13:28:43,114 INFO L226 Difference]: Without dead ends: 984 [2020-08-18 13:28:43,120 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 13:28:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-08-18 13:28:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-08-18 13:28:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 13:28:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-08-18 13:28:43,308 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-08-18 13:28:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:43,311 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-08-18 13:28:43,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:28:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-08-18 13:28:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 13:28:43,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:43,314 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 13:28:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:28:43,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:43,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:43,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-08-18 13:28:43,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:43,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490331217] [2020-08-18 13:28:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:43,926 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 13:28:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 13:28:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 13:28:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:44,151 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 13:28:44,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490331217] [2020-08-18 13:28:44,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:28:44,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 13:28:44,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341012114] [2020-08-18 13:28:44,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:28:44,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:28:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:28:44,155 INFO L87 Difference]: Start difference. First operand 927 states and 1221 transitions. Second operand 12 states.