/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 22:41:56,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:41:56,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:41:56,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:41:56,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:41:56,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:41:56,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:41:56,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:41:56,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:41:56,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:41:56,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:41:56,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:41:56,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:41:56,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:41:56,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:41:56,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:41:56,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:41:56,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:41:56,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:41:56,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:41:56,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:41:56,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:41:56,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:41:56,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:41:56,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:41:56,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:41:56,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:41:56,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:41:56,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:41:56,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:41:56,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:41:56,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:41:56,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:41:56,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:41:56,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:41:56,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:41:56,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:41:56,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:41:56,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:41:56,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:41:56,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:41:56,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 22:41:56,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:41:56,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:41:56,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:41:56,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:41:56,158 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:41:56,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:41:56,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:41:56,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:41:56,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:41:56,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:41:56,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:41:56,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:41:56,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:41:56,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:41:56,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:41:56,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:41:56,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:41:56,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:41:56,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:41:56,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:41:56,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:41:56,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:41:56,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:41:56,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:41:56,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:41:56,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:41:56,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 22:41:56,163 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:41:56,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:41:56,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:41:56,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:41:56,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:41:56,517 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:41:56,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-21 22:41:56,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7a46b39/2a0fc6b9eee74394accd386ff7f5f538/FLAGdadf473ae [2020-08-21 22:41:57,387 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:41:57,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-21 22:41:57,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7a46b39/2a0fc6b9eee74394accd386ff7f5f538/FLAGdadf473ae [2020-08-21 22:41:57,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d7a46b39/2a0fc6b9eee74394accd386ff7f5f538 [2020-08-21 22:41:57,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:41:57,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:41:57,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:41:57,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:41:57,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:41:57,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:41:57" (1/1) ... [2020-08-21 22:41:57,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624e41d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:57, skipping insertion in model container [2020-08-21 22:41:57,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:41:57" (1/1) ... [2020-08-21 22:41:57,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:41:58,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:41:58,562 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-08-21 22:41:58,563 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] [2020-08-21 22:41:59,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:41:59,295 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:41:59,354 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-08-21 22:41:59,355 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] [2020-08-21 22:41:59,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:41:59,611 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:41:59,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59 WrapperNode [2020-08-21 22:41:59,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:41:59,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:41:59,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:41:59,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:41:59,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... [2020-08-21 22:41:59,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:41:59,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:41:59,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:41:59,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:41:59,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:42:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:42:00,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:42:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:42:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-08-21 22:42:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-21 22:42:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-21 22:42:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-08-21 22:42:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-08-21 22:42:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-08-21 22:42:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-08-21 22:42:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-21 22:42:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-21 22:42:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-21 22:42:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-21 22:42:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-21 22:42:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 22:42:00,044 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 22:42:00,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:42:00,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 22:42:00,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 22:42:00,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 22:42:00,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 22:42:00,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 22:42:00,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 22:42:00,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 22:42:00,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-08-21 22:42:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-08-21 22:42:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-08-21 22:42:00,050 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-08-21 22:42:00,050 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-08-21 22:42:00,050 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-08-21 22:42:00,051 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-08-21 22:42:00,052 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-08-21 22:42:00,053 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-08-21 22:42:00,053 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-08-21 22:42:00,053 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-08-21 22:42:00,053 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-08-21 22:42:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-08-21 22:42:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-08-21 22:42:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-08-21 22:42:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 22:42:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 22:42:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 22:42:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 22:42:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 22:42:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 22:42:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 22:42:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-08-21 22:42:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-08-21 22:42:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-08-21 22:42:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-08-21 22:42:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-08-21 22:42:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-08-21 22:42:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-08-21 22:42:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-08-21 22:42:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-08-21 22:42:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 22:42:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-21 22:42:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 22:42:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-08-21 22:42:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-21 22:42:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-21 22:42:00,064 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-21 22:42:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-21 22:42:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-21 22:42:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-21 22:42:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 22:42:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 22:42:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 22:42:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 22:42:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 22:42:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 22:42:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:42:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:42:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:42:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 22:42:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:42:00,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:42:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 22:42:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:42:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 22:42:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 22:42:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 22:42:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 22:42:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 22:42:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 22:42:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 22:42:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-08-21 22:42:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-08-21 22:42:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 22:42:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 22:42:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-21 22:42:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-08-21 22:42:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-08-21 22:42:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-08-21 22:42:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-08-21 22:42:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-08-21 22:42:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-21 22:42:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-08-21 22:42:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-08-21 22:42:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-08-21 22:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-08-21 22:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-08-21 22:42:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-08-21 22:42:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 22:42:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 22:42:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 22:42:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:42:00,931 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 22:42:02,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:42:02,747 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:42:02,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:42:02 BoogieIcfgContainer [2020-08-21 22:42:02,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:42:02,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:42:02,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:42:02,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:42:02,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:41:57" (1/3) ... [2020-08-21 22:42:02,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e594c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:42:02, skipping insertion in model container [2020-08-21 22:42:02,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:41:59" (2/3) ... [2020-08-21 22:42:02,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e594c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:42:02, skipping insertion in model container [2020-08-21 22:42:02,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:42:02" (3/3) ... [2020-08-21 22:42:02,765 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 [2020-08-21 22:42:02,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:42:02,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:42:02,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:42:02,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:42:02,829 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:42:02,829 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:42:02,829 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:42:02,829 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:42:02,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:42:02,830 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:42:02,830 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:42:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-08-21 22:42:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 22:42:02,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:02,874 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] [2020-08-21 22:42:02,874 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:02,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-08-21 22:42:02,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:02,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364777879] [2020-08-21 22:42:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:03,985 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:04,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:42:04,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364777879] [2020-08-21 22:42:04,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:42:04,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:42:04,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676718226] [2020-08-21 22:42:04,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:42:04,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:04,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:42:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:42:04,202 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-08-21 22:42:05,004 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-08-21 22:42:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:12,543 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-08-21 22:42:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:42:12,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-21 22:42:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:12,573 INFO L225 Difference]: With dead ends: 1648 [2020-08-21 22:42:12,574 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 22:42:12,585 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 [2020-08-21 22:42:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 22:42:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-08-21 22:42:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 22:42:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-08-21 22:42:12,833 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-08-21 22:42:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:12,834 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-08-21 22:42:12,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:42:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-08-21 22:42:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 22:42:12,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:12,838 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] [2020-08-21 22:42:12,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:42:12,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:12,839 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-08-21 22:42:12,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:12,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439747955] [2020-08-21 22:42:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,366 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:42:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:42:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:13,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439747955] [2020-08-21 22:42:13,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:42:13,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:42:13,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225511156] [2020-08-21 22:42:13,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:42:13,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:13,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:42:13,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:42:13,522 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-08-21 22:42:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:19,049 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-08-21 22:42:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:42:19,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-21 22:42:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:19,061 INFO L225 Difference]: With dead ends: 1640 [2020-08-21 22:42:19,061 INFO L226 Difference]: Without dead ends: 864 [2020-08-21 22:42:19,064 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 [2020-08-21 22:42:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-21 22:42:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-08-21 22:42:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-08-21 22:42:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-08-21 22:42:19,197 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-08-21 22:42:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:19,197 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-08-21 22:42:19,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:42:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-08-21 22:42:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:42:19,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:19,201 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] [2020-08-21 22:42:19,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:42:19,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-08-21 22:42:19,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:19,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091635640] [2020-08-21 22:42:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,810 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:42:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:42:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:20,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091635640] [2020-08-21 22:42:20,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:20,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 22:42:20,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483272764] [2020-08-21 22:42:20,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:42:20,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:20,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:42:20,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:42:20,022 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-08-21 22:42:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:27,569 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-08-21 22:42:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:42:27,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-08-21 22:42:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:27,578 INFO L225 Difference]: With dead ends: 1674 [2020-08-21 22:42:27,578 INFO L226 Difference]: Without dead ends: 894 [2020-08-21 22:42:27,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:42:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-21 22:42:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-08-21 22:42:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-08-21 22:42:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-08-21 22:42:27,775 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-08-21 22:42:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:27,776 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-08-21 22:42:27,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:42:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-08-21 22:42:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 22:42:27,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:27,779 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] [2020-08-21 22:42:27,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:42:27,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-08-21 22:42:27,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:27,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791106357] [2020-08-21 22:42:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,235 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 22:42:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:42:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:28,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791106357] [2020-08-21 22:42:28,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:28,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 22:42:28,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272624052] [2020-08-21 22:42:28,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:42:28,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:28,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:42:28,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:42:28,458 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-08-21 22:42:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:36,681 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-08-21 22:42:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:42:36,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-08-21 22:42:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:36,690 INFO L225 Difference]: With dead ends: 1734 [2020-08-21 22:42:36,690 INFO L226 Difference]: Without dead ends: 924 [2020-08-21 22:42:36,693 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 [2020-08-21 22:42:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-21 22:42:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-08-21 22:42:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-21 22:42:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-08-21 22:42:36,805 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-08-21 22:42:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:36,805 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-08-21 22:42:36,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:42:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-08-21 22:42:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 22:42:36,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:36,808 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] [2020-08-21 22:42:36,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:42:36,808 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:36,808 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-08-21 22:42:36,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:36,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393912486] [2020-08-21 22:42:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,231 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:42:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 22:42:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:37,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393912486] [2020-08-21 22:42:37,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:37,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:42:37,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211493631] [2020-08-21 22:42:37,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:42:37,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:37,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:42:37,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:42:37,448 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-08-21 22:42:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:44,334 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-08-21 22:42:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:42:44,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-08-21 22:42:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:44,342 INFO L225 Difference]: With dead ends: 1794 [2020-08-21 22:42:44,343 INFO L226 Difference]: Without dead ends: 954 [2020-08-21 22:42:44,346 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 [2020-08-21 22:42:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-08-21 22:42:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-08-21 22:42:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-08-21 22:42:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-08-21 22:42:44,458 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-08-21 22:42:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:44,459 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-08-21 22:42:44,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:42:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-08-21 22:42:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 22:42:44,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:44,460 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] [2020-08-21 22:42:44,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:42:44,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-08-21 22:42:44,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:44,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57686189] [2020-08-21 22:42:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:44,919 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:42:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 22:42:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:45,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57686189] [2020-08-21 22:42:45,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:45,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 22:42:45,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527536512] [2020-08-21 22:42:45,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:42:45,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:45,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:42:45,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:42:45,157 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-08-21 22:42:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:42:54,260 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-08-21 22:42:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:42:54,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-08-21 22:42:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:42:54,269 INFO L225 Difference]: With dead ends: 1854 [2020-08-21 22:42:54,269 INFO L226 Difference]: Without dead ends: 984 [2020-08-21 22:42:54,273 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 [2020-08-21 22:42:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-08-21 22:42:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-08-21 22:42:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-21 22:42:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-08-21 22:42:54,407 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-08-21 22:42:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:42:54,410 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-08-21 22:42:54,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:42:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-08-21 22:42:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-21 22:42:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:42:54,412 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] [2020-08-21 22:42:54,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:42:54,413 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:42:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:42:54,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-08-21 22:42:54,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:42:54,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390436099] [2020-08-21 22:42:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:42:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:54,902 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 22:42:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:42:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:42:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:54,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:42:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 22:42:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 22:42:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:55,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:42:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:42:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:42:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:42:55,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390436099] [2020-08-21 22:42:55,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:42:55,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:42:55,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636672869] [2020-08-21 22:42:55,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:42:55,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:42:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:42:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:42:55,165 INFO L87 Difference]: Start difference. First operand 927 states and 1221 transitions. Second operand 12 states.