/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=LOWLEXORDER -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 19:12:36,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:12:36,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:12:36,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:12:36,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:12:36,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:12:36,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:12:36,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:12:36,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:12:36,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:12:36,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:12:36,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:12:36,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:12:36,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:12:36,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:12:36,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:12:36,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:12:36,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:12:36,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:12:36,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:12:36,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:12:36,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:12:36,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:12:36,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:12:36,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:12:36,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:12:36,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:12:36,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:12:36,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:12:36,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:12:36,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:12:36,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:12:36,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:12:36,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:12:36,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:12:36,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:12:36,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:12:36,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:12:36,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:12:36,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:12:36,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:12:36,912 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 19:12:36,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:12:36,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:12:36,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:12:36,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:12:36,969 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:12:36,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:12:36,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:12:36,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:12:36,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:12:36,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:12:36,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:12:36,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:12:36,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:12:36,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:12:36,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:12:36,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:12:36,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:12:36,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:12:36,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:12:36,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:12:36,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:12:36,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:12:36,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:12:36,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:12:36,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:12:36,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:12:36,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 19:12:36,977 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 19:12:37,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:12:37,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:12:37,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:12:37,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:12:37,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:12:37,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 19:12:37,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a85b500/ab3ff554b3894c6bb2be4909208d0b86/FLAG64e861d6d [2020-08-18 19:12:38,122 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:12:38,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 19:12:38,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a85b500/ab3ff554b3894c6bb2be4909208d0b86/FLAG64e861d6d [2020-08-18 19:12:38,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7a85b500/ab3ff554b3894c6bb2be4909208d0b86 [2020-08-18 19:12:38,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:12:38,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:12:38,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:38,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:12:38,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:12:38,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4333d066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:38, skipping insertion in model container [2020-08-18 19:12:38,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:38" (1/1) ... [2020-08-18 19:12:38,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:12:38,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:12:38,991 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 19:12:38,992 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 19:12:39,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:39,596 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:12:39,723 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 19:12:39,724 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 19:12:39,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:40,059 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:12:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40 WrapperNode [2020-08-18 19:12:40,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:40,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:12:40,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:12:40,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:12:40,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (1/1) ... [2020-08-18 19:12:40,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:12:40,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:12:40,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:12:40,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:12:40,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (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 19:12:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:12:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:12:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 19:12:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-08-18 19:12:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 19:12:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-18 19:12:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-08-18 19:12:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-08-18 19:12:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-08-18 19:12:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-08-18 19:12:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-18 19:12:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-18 19:12:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-18 19:12:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-18 19:12:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-18 19:12:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 19:12:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 19:12:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:12:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 19:12:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 19:12:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 19:12:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 19:12:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 19:12:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 19:12:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 19:12:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 19:12:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 19:12:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 19:12:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-08-18 19:12:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-08-18 19:12:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-08-18 19:12:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-08-18 19:12:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-08-18 19:12:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-08-18 19:12:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-08-18 19:12:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-08-18 19:12:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-08-18 19:12:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-08-18 19:12:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-08-18 19:12:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-08-18 19:12:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 19:12:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 19:12:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-08-18 19:12:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-08-18 19:12:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-08-18 19:12:40,488 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-08-18 19:12:40,488 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-08-18 19:12:40,489 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-08-18 19:12:40,489 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-08-18 19:12:40,489 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-08-18 19:12:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-08-18 19:12:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-08-18 19:12:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-08-18 19:12:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-08-18 19:12:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 19:12:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-08-18 19:12:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-08-18 19:12:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-08-18 19:12:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-18 19:12:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-18 19:12:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 19:12:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 19:12:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:12:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-08-18 19:12:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-18 19:12:40,495 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-18 19:12:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-18 19:12:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-18 19:12:40,496 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-18 19:12:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-18 19:12:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-18 19:12:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 19:12:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 19:12:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 19:12:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 19:12:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 19:12:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:12:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:12:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 19:12:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:12:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 19:12:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 19:12:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 19:12:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 19:12:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 19:12:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 19:12:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 19:12:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-08-18 19:12:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-08-18 19:12:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 19:12:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 19:12:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 19:12:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 19:12:40,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:12:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-08-18 19:12:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-08-18 19:12:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-08-18 19:12:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-08-18 19:12:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-08-18 19:12:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 19:12:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-08-18 19:12:40,518 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:12:40,519 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-08-18 19:12:40,520 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 19:12:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 19:12:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 19:12:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:12:41,327 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 19:12:42,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:12:42,893 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 19:12:42,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:42 BoogieIcfgContainer [2020-08-18 19:12:42,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:12:42,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:12:42,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:12:42,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:12:42,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:12:38" (1/3) ... [2020-08-18 19:12:42,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb4ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:42, skipping insertion in model container [2020-08-18 19:12:42,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:40" (2/3) ... [2020-08-18 19:12:42,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb4ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:42, skipping insertion in model container [2020-08-18 19:12:42,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:42" (3/3) ... [2020-08-18 19:12:42,910 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 19:12:42,921 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:12:42,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:12:42,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:12:42,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:12:42,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:12:42,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:12:42,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:12:42,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:12:42,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:12:42,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:12:42,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:12:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-08-18 19:12:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:12:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:43,020 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 19:12:43,020 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-08-18 19:12:43,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:43,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095855434] [2020-08-18 19:12:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:44,050 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:12:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:44,199 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 19:12:44,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095855434] [2020-08-18 19:12:44,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:44,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:12:44,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755390378] [2020-08-18 19:12:44,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:12:44,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:12:44,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:12:44,227 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-08-18 19:12:45,101 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-08-18 19:12:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:52,829 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-08-18 19:12:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:12:52,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 19:12:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:52,861 INFO L225 Difference]: With dead ends: 1648 [2020-08-18 19:12:52,862 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 19:12:52,872 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 19:12:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 19:12:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-08-18 19:12:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-18 19:12:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-08-18 19:12:53,118 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-08-18 19:12:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:53,118 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-08-18 19:12:53,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:12:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-08-18 19:12:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:12:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:53,122 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 19:12:53,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:12:53,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-08-18 19:12:53,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:53,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297440696] [2020-08-18 19:12:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,778 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:12:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:12:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:12:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:12:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:12:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:53,934 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 19:12:53,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297440696] [2020-08-18 19:12:53,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:53,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:12:53,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91661427] [2020-08-18 19:12:53,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:12:53,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:53,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:12:53,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:12:53,938 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-08-18 19:13:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:00,007 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-08-18 19:13:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:13:00,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 19:13:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:00,017 INFO L225 Difference]: With dead ends: 1640 [2020-08-18 19:13:00,017 INFO L226 Difference]: Without dead ends: 864 [2020-08-18 19:13:00,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:13:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-18 19:13:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-08-18 19:13:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-08-18 19:13:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-08-18 19:13:00,172 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-08-18 19:13:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:00,174 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-08-18 19:13:00,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:13:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-08-18 19:13:00,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 19:13:00,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:00,177 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 19:13:00,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:13:00,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-08-18 19:13:00,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:00,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45694170] [2020-08-18 19:13:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,782 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:13:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:13:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:13:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:00,959 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 19:13:00,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45694170] [2020-08-18 19:13:00,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:00,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 19:13:00,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361243368] [2020-08-18 19:13:00,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:13:00,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:13:00,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:13:00,962 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-08-18 19:13:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:07,783 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-08-18 19:13:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:13:07,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-08-18 19:13:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:07,791 INFO L225 Difference]: With dead ends: 1674 [2020-08-18 19:13:07,791 INFO L226 Difference]: Without dead ends: 894 [2020-08-18 19:13:07,795 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 [2020-08-18 19:13:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-18 19:13:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-08-18 19:13:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-08-18 19:13:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-08-18 19:13:07,946 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-08-18 19:13:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:07,946 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-08-18 19:13:07,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:13:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-08-18 19:13:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 19:13:07,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:07,955 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 19:13:07,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:13:07,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-08-18 19:13:07,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:07,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819260] [2020-08-18 19:13:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,479 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:13:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 19:13:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:13:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,683 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 19:13:08,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819260] [2020-08-18 19:13:08,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:08,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 19:13:08,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178308879] [2020-08-18 19:13:08,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:13:08,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:08,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:13:08,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:13:08,690 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-08-18 19:13:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:17,202 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-08-18 19:13:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:13:17,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-08-18 19:13:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:17,213 INFO L225 Difference]: With dead ends: 1734 [2020-08-18 19:13:17,213 INFO L226 Difference]: Without dead ends: 924 [2020-08-18 19:13:17,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:13:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-18 19:13:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-08-18 19:13:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-18 19:13:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-08-18 19:13:17,368 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-08-18 19:13:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:17,369 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-08-18 19:13:17,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:13:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-08-18 19:13:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 19:13:17,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:17,371 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 19:13:17,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:13:17,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-08-18 19:13:17,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:17,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218316002] [2020-08-18 19:13:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,830 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:13:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:13:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 19:13:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:18,045 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 19:13:18,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218316002] [2020-08-18 19:13:18,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:18,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:13:18,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155507305] [2020-08-18 19:13:18,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:13:18,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:13:18,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:13:18,047 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-08-18 19:13:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:24,326 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-08-18 19:13:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:13:24,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-08-18 19:13:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:24,334 INFO L225 Difference]: With dead ends: 1794 [2020-08-18 19:13:24,335 INFO L226 Difference]: Without dead ends: 954 [2020-08-18 19:13:24,338 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 19:13:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-08-18 19:13:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-08-18 19:13:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-08-18 19:13:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-08-18 19:13:24,463 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-08-18 19:13:24,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:24,464 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-08-18 19:13:24,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:13:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-08-18 19:13:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 19:13:24,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:24,466 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 19:13:24,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:13:24,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-08-18 19:13:24,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:24,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955121017] [2020-08-18 19:13:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:24,966 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:13:24,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:13:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:13:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:25,174 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 19:13:25,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955121017] [2020-08-18 19:13:25,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:25,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:13:25,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882664206] [2020-08-18 19:13:25,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:13:25,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:13:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:13:25,177 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-08-18 19:13:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:34,298 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-08-18 19:13:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:13:34,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-08-18 19:13:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:34,309 INFO L225 Difference]: With dead ends: 1854 [2020-08-18 19:13:34,309 INFO L226 Difference]: Without dead ends: 984 [2020-08-18 19:13:34,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:13:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-08-18 19:13:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-08-18 19:13:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 19:13:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-08-18 19:13:34,443 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-08-18 19:13:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:34,444 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-08-18 19:13:34,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:13:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-08-18 19:13:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 19:13:34,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:34,446 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 19:13:34,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:13:34,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:34,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-08-18 19:13:34,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:34,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195783496] [2020-08-18 19:13:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:34,965 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 19:13:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:13:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:13:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:13:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:35,179 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 19:13:35,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195783496] [2020-08-18 19:13:35,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:13:35,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:13:35,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015209805] [2020-08-18 19:13:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:13:35,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:13:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:13:35,181 INFO L87 Difference]: Start difference. First operand 927 states and 1221 transitions. Second operand 12 states.