/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 interpolation-heuristic=FIRST --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 15:26:34,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:26:34,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:26:34,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:26:34,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:26:34,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:26:34,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:26:34,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:26:34,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:26:34,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:26:34,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:26:34,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:26:34,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:26:34,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:26:34,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:26:34,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:26:34,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:26:34,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:26:34,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:26:34,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:26:34,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:26:34,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:26:34,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:26:34,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:26:34,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:26:34,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:26:34,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:26:34,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:26:34,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:26:34,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:26:34,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:26:34,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:26:34,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:26:34,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:26:34,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:26:34,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:26:34,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:26:34,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:26:34,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:26:34,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:26:34,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:26:34,941 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 15:26:34,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:26:34,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:26:34,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:26:34,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:26:34,990 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:26:34,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:26:34,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:26:34,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:26:34,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:26:34,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:26:34,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:26:34,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:26:34,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:26:34,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:26:34,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:26:34,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:26:34,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:26:34,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:26:34,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:26:34,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:26:34,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:26:34,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:26:34,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:26:34,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:26:34,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:26:34,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:26:34,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 15:26:34,996 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:26:35,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:26:35,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:26:35,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:26:35,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:26:35,279 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:26:35,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-21 15:26:35,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9505723/2437c3bc5fde4512b55d7af9eb05d36b/FLAGe1512bcbb [2020-08-21 15:26:36,101 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:26:36,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-21 15:26:36,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9505723/2437c3bc5fde4512b55d7af9eb05d36b/FLAGe1512bcbb [2020-08-21 15:26:36,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a9505723/2437c3bc5fde4512b55d7af9eb05d36b [2020-08-21 15:26:36,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:26:36,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:26:36,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:26:36,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:26:36,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:26:36,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:26:36" (1/1) ... [2020-08-21 15:26:36,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fd4afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:36, skipping insertion in model container [2020-08-21 15:26:36,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:26:36" (1/1) ... [2020-08-21 15:26:36,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:26:36,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:26:36,751 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 15:26:36,752 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 15:26:37,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:26:37,382 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:26:37,462 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 15:26:37,463 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 15:26:37,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:26:37,792 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:26:37,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37 WrapperNode [2020-08-21 15:26:37,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:26:37,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:26:37,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:26:37,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:26:37,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:37,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:37,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:37,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:37,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:38,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:38,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (1/1) ... [2020-08-21 15:26:38,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:26:38,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:26:38,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:26:38,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:26:38,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (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 15:26:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:26:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:26:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:26:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-08-21 15:26:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-21 15:26:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-21 15:26:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-08-21 15:26:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-08-21 15:26:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-08-21 15:26:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-08-21 15:26:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-21 15:26:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-21 15:26:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-21 15:26:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-21 15:26:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-21 15:26:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 15:26:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 15:26:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:26:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 15:26:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 15:26:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 15:26:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-21 15:26:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 15:26:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-08-21 15:26:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-08-21 15:26:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-08-21 15:26:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-08-21 15:26:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-08-21 15:26:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-08-21 15:26:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-08-21 15:26:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-08-21 15:26:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-08-21 15:26:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-08-21 15:26:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-08-21 15:26:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-08-21 15:26:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-08-21 15:26:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-08-21 15:26:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-21 15:26:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-21 15:26:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-21 15:26:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-21 15:26:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 15:26:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-08-21 15:26:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-08-21 15:26:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-08-21 15:26:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-08-21 15:26:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-08-21 15:26:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-08-21 15:26:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-08-21 15:26:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-08-21 15:26:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-08-21 15:26:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-08-21 15:26:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-08-21 15:26:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-08-21 15:26:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-21 15:26:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 15:26:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 15:26:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 15:26:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:26:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-21 15:26:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-21 15:26:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-21 15:26:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-21 15:26:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-21 15:26:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-21 15:26:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-21 15:26:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 15:26:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 15:26:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 15:26:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-21 15:26:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:26:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:26:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 15:26:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:26:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 15:26:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 15:26:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 15:26:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 15:26:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 15:26:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 15:26:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 15:26:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-08-21 15:26:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-08-21 15:26:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 15:26:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-08-21 15:26:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-08-21 15:26:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-08-21 15:26:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-08-21 15:26:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:26:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-08-21 15:26:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:26:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-08-21 15:26:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 15:26:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-21 15:26:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 15:26:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:26:38,912 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 15:26:40,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:26:40,561 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 15:26:40,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:26:40 BoogieIcfgContainer [2020-08-21 15:26:40,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:26:40,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:26:40,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:26:40,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:26:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:26:36" (1/3) ... [2020-08-21 15:26:40,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be5c639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:26:40, skipping insertion in model container [2020-08-21 15:26:40,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:26:37" (2/3) ... [2020-08-21 15:26:40,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be5c639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:26:40, skipping insertion in model container [2020-08-21 15:26:40,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:26:40" (3/3) ... [2020-08-21 15:26:40,589 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 15:26:40,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:26:40,619 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:26:40,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:26:40,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:26:40,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:26:40,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:26:40,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:26:40,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:26:40,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:26:40,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:26:40,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:26:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-08-21 15:26:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 15:26:40,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:26:40,764 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 15:26:40,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:26:40,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:26:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-08-21 15:26:40,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:26:40,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159065227] [2020-08-21 15:26:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:26:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:41,902 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:26:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:26:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:26:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:26:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:42,049 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 15:26:42,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159065227] [2020-08-21 15:26:42,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:26:42,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:26:42,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856696268] [2020-08-21 15:26:42,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:26:42,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:26:42,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:26:42,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:26:42,074 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-08-21 15:26:42,901 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-08-21 15:26:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:26:49,816 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-08-21 15:26:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:26:49,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-21 15:26:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:26:49,848 INFO L225 Difference]: With dead ends: 1648 [2020-08-21 15:26:49,848 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 15:26:49,864 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 15:26:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 15:26:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-08-21 15:26:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 15:26:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-08-21 15:26:50,073 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-08-21 15:26:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:26:50,074 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-08-21 15:26:50,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:26:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-08-21 15:26:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:26:50,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:26:50,077 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 15:26:50,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:26:50,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:26:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:26:50,078 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-08-21 15:26:50,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:26:50,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187506950] [2020-08-21 15:26:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:26:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,636 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:26:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:26:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:26:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:26:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:26:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:26:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:26:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:26:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:26:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:50,823 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 15:26:50,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187506950] [2020-08-21 15:26:50,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:26:50,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:26:50,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266626954] [2020-08-21 15:26:50,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:26:50,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:26:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:26:50,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:26:50,829 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-08-21 15:26:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:26:56,765 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-08-21 15:26:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:26:56,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-21 15:26:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:26:56,778 INFO L225 Difference]: With dead ends: 1640 [2020-08-21 15:26:56,778 INFO L226 Difference]: Without dead ends: 864 [2020-08-21 15:26:56,782 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 15:26:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-21 15:26:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-08-21 15:26:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-08-21 15:26:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-08-21 15:26:56,999 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-08-21 15:26:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:26:57,000 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-08-21 15:26:57,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:26:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-08-21 15:26:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 15:26:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:26:57,014 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 15:26:57,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:26:57,015 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:26:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:26:57,015 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-08-21 15:26:57,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:26:57,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313143918] [2020-08-21 15:26:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:26:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,635 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:26:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:26:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:26:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:26:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:26:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:26:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:26:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:26:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:26:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:26:57,798 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 15:26:57,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313143918] [2020-08-21 15:26:57,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:26:57,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 15:26:57,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018272443] [2020-08-21 15:26:57,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:26:57,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:26:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:26:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:26:57,801 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-08-21 15:27:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:27:05,050 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-08-21 15:27:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:27:05,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-08-21 15:27:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:27:05,060 INFO L225 Difference]: With dead ends: 1674 [2020-08-21 15:27:05,060 INFO L226 Difference]: Without dead ends: 894 [2020-08-21 15:27:05,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:27:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-21 15:27:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-08-21 15:27:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-08-21 15:27:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-08-21 15:27:05,194 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-08-21 15:27:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:27:05,195 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-08-21 15:27:05,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:27:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-08-21 15:27:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 15:27:05,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:27:05,197 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 15:27:05,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:27:05,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:27:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:27:05,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-08-21 15:27:05,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:27:05,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123922832] [2020-08-21 15:27:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:27:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,707 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:27:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:27:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:27:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:27:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:27:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:27:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:27:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:05,877 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 15:27:05,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123922832] [2020-08-21 15:27:05,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:27:05,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:27:05,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180857068] [2020-08-21 15:27:05,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:27:05,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:27:05,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:27:05,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:27:05,880 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-08-21 15:27:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:27:13,988 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-08-21 15:27:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:27:13,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-08-21 15:27:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:27:13,996 INFO L225 Difference]: With dead ends: 1734 [2020-08-21 15:27:13,996 INFO L226 Difference]: Without dead ends: 924 [2020-08-21 15:27:14,000 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 [2020-08-21 15:27:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-21 15:27:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-08-21 15:27:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-21 15:27:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-08-21 15:27:14,116 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-08-21 15:27:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:27:14,116 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-08-21 15:27:14,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:27:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-08-21 15:27:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 15:27:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:27:14,118 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 15:27:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:27:14,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:27:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:27:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-08-21 15:27:14,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:27:14,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884600255] [2020-08-21 15:27:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:27:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,593 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:27:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:27:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:27:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:27:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:27:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:27:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 15:27:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:14,830 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 15:27:14,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884600255] [2020-08-21 15:27:14,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:27:14,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:27:14,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740811749] [2020-08-21 15:27:14,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:27:14,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:27:14,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:27:14,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:27:14,839 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-08-21 15:27:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:27:21,355 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-08-21 15:27:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:27:21,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-08-21 15:27:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:27:21,364 INFO L225 Difference]: With dead ends: 1794 [2020-08-21 15:27:21,365 INFO L226 Difference]: Without dead ends: 954 [2020-08-21 15:27:21,368 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 15:27:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-08-21 15:27:21,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-08-21 15:27:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-08-21 15:27:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-08-21 15:27:21,477 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-08-21 15:27:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:27:21,477 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-08-21 15:27:21,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:27:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-08-21 15:27:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 15:27:21,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:27:21,479 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 15:27:21,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:27:21,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:27:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:27:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-08-21 15:27:21,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:27:21,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943743173] [2020-08-21 15:27:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:27:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:21,931 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:27:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:27:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:27:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:27:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:27:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:27:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:27:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:22,146 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 15:27:22,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943743173] [2020-08-21 15:27:22,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:27:22,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:27:22,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49564966] [2020-08-21 15:27:22,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:27:22,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:27:22,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:27:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:27:22,150 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-08-21 15:27:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:27:31,738 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-08-21 15:27:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:27:31,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-08-21 15:27:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:27:31,749 INFO L225 Difference]: With dead ends: 1854 [2020-08-21 15:27:31,749 INFO L226 Difference]: Without dead ends: 984 [2020-08-21 15:27:31,754 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 15:27:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-08-21 15:27:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-08-21 15:27:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-21 15:27:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-08-21 15:27:31,888 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-08-21 15:27:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:27:31,890 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-08-21 15:27:31,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:27:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-08-21 15:27:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-21 15:27:31,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:27:31,892 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 15:27:31,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:27:31,892 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:27:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:27:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-08-21 15:27:31,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:27:31,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534742664] [2020-08-21 15:27:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:27:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,361 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-21 15:27:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:27:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:27:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:27:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 15:27:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:27:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:27:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 15:27:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat