/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:54:02,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:54:02,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:54:02,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:54:02,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:54:02,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:54:02,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:54:02,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:54:02,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:54:02,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:54:02,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:54:02,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:54:02,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:54:02,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:54:02,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:54:02,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:54:02,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:54:02,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:54:02,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:54:02,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:54:02,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:54:02,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:54:02,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:54:02,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:54:02,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:54:02,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:54:02,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:54:02,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:54:02,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:54:02,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:54:02,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:54:02,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:54:02,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:54:02,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:54:02,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:54:02,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:54:02,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:54:02,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:54:02,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:54:02,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:54:02,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:54:02,211 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 [2020-08-19 04:54:02,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:54:02,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:54:02,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:54:02,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:54:02,243 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:54:02,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:54:02,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:54:02,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:54:02,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:54:02,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:54:02,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:54:02,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:54:02,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:54:02,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:54:02,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:54:02,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:54:02,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:54:02,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:54:02,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:54:02,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:54:02,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:54:02,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 04:54:02,248 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:54:02,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:54:02,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:54:02,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:54:02,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:54:02,590 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:54:02,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 04:54:02,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe8d98a/245be6d031434a45a026066cabec3750/FLAGabb81b005 [2020-08-19 04:54:03,486 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:54:03,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 04:54:03,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe8d98a/245be6d031434a45a026066cabec3750/FLAGabb81b005 [2020-08-19 04:54:04,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe8d98a/245be6d031434a45a026066cabec3750 [2020-08-19 04:54:04,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:54:04,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:54:04,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:54:04,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:54:04,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:54:04,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:54:04" (1/1) ... [2020-08-19 04:54:04,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ce1d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:04, skipping insertion in model container [2020-08-19 04:54:04,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:54:04" (1/1) ... [2020-08-19 04:54:04,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:54:04,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:54:05,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:54:05,648 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:54:06,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:54:06,120 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:54:06,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06 WrapperNode [2020-08-19 04:54:06,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:54:06,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:54:06,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:54:06,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:54:06,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (1/1) ... [2020-08-19 04:54:06,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:54:06,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:54:06,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:54:06,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:54:06,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (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 [2020-08-19 04:54:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:54:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:54:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 04:54:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-19 04:54:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 04:54:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-19 04:54:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-19 04:54:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 04:54:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:54:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 04:54:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 04:54:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 04:54:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 04:54:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 04:54:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 04:54:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 04:54:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 04:54:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-19 04:54:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-19 04:54:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-19 04:54:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-19 04:54:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-19 04:54:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-19 04:54:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-19 04:54:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-19 04:54:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-19 04:54:06,447 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-19 04:54:06,447 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 04:54:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-19 04:54:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-19 04:54:06,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-19 04:54:06,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-19 04:54:06,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-19 04:54:06,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-19 04:54:06,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 04:54:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 04:54:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-19 04:54:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-19 04:54:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-19 04:54:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 04:54:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-19 04:54:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 04:54:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 04:54:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-19 04:54:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-19 04:54:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-19 04:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-19 04:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-19 04:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-19 04:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-19 04:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-19 04:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-19 04:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-19 04:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-19 04:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 04:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 04:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 04:54:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:54:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 04:54:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 04:54:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-19 04:54:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-19 04:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-19 04:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 04:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-19 04:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 04:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 04:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-19 04:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-19 04:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 04:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 04:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 04:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 04:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 04:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 04:54:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-19 04:54:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-19 04:54:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-19 04:54:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-19 04:54:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-19 04:54:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:54:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-19 04:54:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-19 04:54:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-19 04:54:06,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-19 04:54:06,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:54:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:54:06,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 04:54:06,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:54:07,395 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 04:54:08,005 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-19 04:54:08,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:54:08,540 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:54:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:54:08 BoogieIcfgContainer [2020-08-19 04:54:08,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:54:08,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:54:08,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:54:08,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:54:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:54:04" (1/3) ... [2020-08-19 04:54:08,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e1a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:54:08, skipping insertion in model container [2020-08-19 04:54:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:06" (2/3) ... [2020-08-19 04:54:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e1a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:54:08, skipping insertion in model container [2020-08-19 04:54:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:54:08" (3/3) ... [2020-08-19 04:54:08,558 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 04:54:08,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:54:08,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:54:08,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:54:08,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:54:08,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:54:08,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:54:08,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:54:08,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:54:08,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:54:08,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:54:08,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:54:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-19 04:54:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:54:08,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:08,673 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] [2020-08-19 04:54:08,674 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:08,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-19 04:54:08,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:08,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879181885] [2020-08-19 04:54:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,655 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 04:54:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:54:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 04:54:09,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879181885] [2020-08-19 04:54:09,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:54:09,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 04:54:09,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544711707] [2020-08-19 04:54:09,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:54:09,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:54:09,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:54:09,874 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-19 04:54:10,204 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:10,899 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 04:54:11,186 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-19 04:54:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:19,312 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-19 04:54:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:54:19,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-19 04:54:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:19,339 INFO L225 Difference]: With dead ends: 945 [2020-08-19 04:54:19,340 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 04:54:19,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 04:54:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-19 04:54:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 04:54:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-19 04:54:19,496 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-19 04:54:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:19,497 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-19 04:54:19,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:54:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-19 04:54:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 04:54:19,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:19,502 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:19,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:54:19,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-19 04:54:19,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:19,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585918128] [2020-08-19 04:54:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:19,926 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:19,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:54:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:54:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:54:20,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585918128] [2020-08-19 04:54:20,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:20,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:54:20,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682666366] [2020-08-19 04:54:20,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:54:20,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:54:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:54:20,084 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-19 04:54:20,358 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:21,035 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 04:54:22,237 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:54:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:28,924 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-19 04:54:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:54:28,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-19 04:54:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:28,936 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 04:54:28,936 INFO L226 Difference]: Without dead ends: 893 [2020-08-19 04:54:28,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-19 04:54:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-19 04:54:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-19 04:54:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-19 04:54:29,066 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-19 04:54:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:29,067 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-19 04:54:29,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:54:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-19 04:54:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 04:54:29,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:29,070 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:29,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:54:29,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-19 04:54:29,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:29,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137725532] [2020-08-19 04:54:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,515 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:54:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:54:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:54:29,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137725532] [2020-08-19 04:54:29,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:29,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:54:29,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999370826] [2020-08-19 04:54:29,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:54:29,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:29,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:54:29,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:54:29,820 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-19 04:54:30,103 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:30,470 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 04:54:30,764 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:54:35,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:35,338 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-19 04:54:35,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:54:35,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-19 04:54:35,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:35,345 INFO L225 Difference]: With dead ends: 895 [2020-08-19 04:54:35,346 INFO L226 Difference]: Without dead ends: 892 [2020-08-19 04:54:35,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-19 04:54:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-19 04:54:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-19 04:54:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-19 04:54:35,476 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-19 04:54:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:35,478 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-19 04:54:35,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:54:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-19 04:54:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:54:35,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:35,485 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:35,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:54:35,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:35,486 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-19 04:54:35,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:35,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392832722] [2020-08-19 04:54:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,894 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:54:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:54:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:54:36,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392832722] [2020-08-19 04:54:36,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:36,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:54:36,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676297109] [2020-08-19 04:54:36,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:54:36,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:36,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:54:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:54:36,080 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-19 04:54:36,324 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:36,650 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 04:54:36,939 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:54:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:42,970 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-19 04:54:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:54:42,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 04:54:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:42,978 INFO L225 Difference]: With dead ends: 894 [2020-08-19 04:54:42,979 INFO L226 Difference]: Without dead ends: 891 [2020-08-19 04:54:42,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-19 04:54:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-19 04:54:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 04:54:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-19 04:54:43,113 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-19 04:54:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:43,114 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-19 04:54:43,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:54:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-19 04:54:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:54:43,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:43,118 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:43,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:54:43,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-19 04:54:43,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:43,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850735020] [2020-08-19 04:54:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,466 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:54:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:54:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:54:43,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850735020] [2020-08-19 04:54:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:54:43,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211425017] [2020-08-19 04:54:43,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:54:43,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:54:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:54:43,695 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-19 04:54:43,932 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:44,232 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 04:54:44,508 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:54:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:51,799 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-19 04:54:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:54:51,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 04:54:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:51,807 INFO L225 Difference]: With dead ends: 893 [2020-08-19 04:54:51,807 INFO L226 Difference]: Without dead ends: 890 [2020-08-19 04:54:51,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-19 04:54:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-19 04:54:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 04:54:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-19 04:54:51,892 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-19 04:54:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:51,893 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-19 04:54:51,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:54:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-19 04:54:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 04:54:51,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:51,895 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:51,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:54:51,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:51,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-19 04:54:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:51,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857886247] [2020-08-19 04:54:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,235 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:54:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:54:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:54:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:54:52,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857886247] [2020-08-19 04:54:52,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:52,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:54:52,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412118469] [2020-08-19 04:54:52,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:54:52,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:52,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:54:52,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:54:52,384 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-19 04:54:52,594 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:54:52,882 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 04:54:53,147 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:54:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:59,492 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-19 04:54:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:54:59,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 04:54:59,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:59,499 INFO L225 Difference]: With dead ends: 892 [2020-08-19 04:54:59,499 INFO L226 Difference]: Without dead ends: 889 [2020-08-19 04:54:59,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-19 04:54:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-19 04:54:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-19 04:54:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-19 04:54:59,600 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-19 04:54:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:59,601 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-19 04:54:59,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:54:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-19 04:54:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 04:54:59,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:59,603 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-19 04:54:59,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:54:59,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-19 04:54:59,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:59,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024349956] [2020-08-19 04:54:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:59,919 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:54:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:54:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:59,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:55:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:55:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:55:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:55:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:55:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:55:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:55:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:55:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:55:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 04:55:00,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024349956] [2020-08-19 04:55:00,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:55:00,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:55:00,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021004137] [2020-08-19 04:55:00,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:55:00,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:55:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:55:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:55:00,060 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-19 04:55:00,342 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:55:00,661 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 04:55:00,945 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:55:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:55:06,048 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-19 04:55:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:55:06,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-19 04:55:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:55:06,051 INFO L225 Difference]: With dead ends: 889 [2020-08-19 04:55:06,051 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:55:06,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:55:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:55:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:55:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:55:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:55:06,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-19 04:55:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:55:06,056 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:55:06,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:55:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:55:06,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:55:06,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:55:06,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:55:06,602 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166