/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=SMALLEST -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 [2020-08-18 17:35:37,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:35:37,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:35:37,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:35:37,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:35:37,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:35:37,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:35:37,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:35:37,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:35:37,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:35:37,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:35:37,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:35:37,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:35:37,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:35:37,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:35:37,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:35:37,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:35:37,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:35:37,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:35:37,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:35:37,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:35:37,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:35:37,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:35:37,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:35:37,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:35:37,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:35:37,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:35:37,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:35:37,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:35:37,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:35:37,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:35:37,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:35:37,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:35:37,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:35:37,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:35:37,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:35:37,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:35:37,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:35:37,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:35:37,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:35:37,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:35:37,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 17:35:37,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:35:37,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:35:37,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:35:37,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:35:37,479 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:35:37,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:35:37,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:35:37,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:35:37,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:35:37,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:35:37,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:35:37,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:35:37,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:35:37,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:35:37,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:35:37,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:35:37,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:35:37,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:35:37,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:35:37,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:35:37,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:35:37,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 17:35:37,486 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:35:37,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:35:37,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:35:37,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:35:37,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:35:37,813 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:35:37,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 17:35:37,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635153dfd/f583c944e4a746c7a42ee4de804af99f/FLAG6457ca301 [2020-08-18 17:35:38,755 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:35:38,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 17:35:38,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635153dfd/f583c944e4a746c7a42ee4de804af99f/FLAG6457ca301 [2020-08-18 17:35:39,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635153dfd/f583c944e4a746c7a42ee4de804af99f [2020-08-18 17:35:39,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:35:39,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:35:39,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:35:39,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:35:39,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:35:39,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:35:39" (1/1) ... [2020-08-18 17:35:39,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281ec5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:39, skipping insertion in model container [2020-08-18 17:35:39,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:35:39" (1/1) ... [2020-08-18 17:35:39,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:35:39,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:35:40,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:35:40,883 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:35:41,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:35:41,165 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:35:41,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41 WrapperNode [2020-08-18 17:35:41,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:35:41,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:35:41,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:35:41,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:35:41,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... [2020-08-18 17:35:41,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:35:41,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:35:41,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:35:41,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:35:41,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:35:41,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:35:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:35:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 17:35:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 17:35:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 17:35:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 17:35:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 17:35:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 17:35:41,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 17:35:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 17:35:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 17:35:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 17:35:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 17:35:41,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 17:35:41,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 17:35:41,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 17:35:41,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 17:35:41,458 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 17:35:41,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 17:35:41,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 17:35:41,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 17:35:41,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 17:35:41,460 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 17:35:41,460 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 17:35:41,460 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 17:35:41,460 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 17:35:41,460 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 17:35:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 17:35:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 17:35:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:35:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 17:35:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 17:35:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 17:35:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 17:35:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 17:35:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 17:35:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 17:35:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 17:35:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 17:35:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 17:35:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 17:35:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 17:35:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 17:35:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 17:35:41,466 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 17:35:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 17:35:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 17:35:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 17:35:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 17:35:41,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 17:35:41,468 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 17:35:41,514 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 17:35:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 17:35:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 17:35:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 17:35:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 17:35:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 17:35:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:35:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 17:35:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 17:35:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 17:35:41,517 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 17:35:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 17:35:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 17:35:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 17:35:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 17:35:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 17:35:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 17:35:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 17:35:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 17:35:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 17:35:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 17:35:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 17:35:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 17:35:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 17:35:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 17:35:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 17:35:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 17:35:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 17:35:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 17:35:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 17:35:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 17:35:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 17:35:41,526 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 17:35:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 17:35:41,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:35:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:35:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:35:41,528 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 17:35:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:35:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 17:35:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 17:35:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 17:35:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 17:35:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 17:35:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 17:35:41,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 17:35:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 17:35:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 17:35:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:35:42,341 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 17:35:42,884 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 17:35:43,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:35:43,402 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:35:43,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:35:43 BoogieIcfgContainer [2020-08-18 17:35:43,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:35:43,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:35:43,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:35:43,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:35:43,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:35:39" (1/3) ... [2020-08-18 17:35:43,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edca6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:35:43, skipping insertion in model container [2020-08-18 17:35:43,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:35:41" (2/3) ... [2020-08-18 17:35:43,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edca6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:35:43, skipping insertion in model container [2020-08-18 17:35:43,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:35:43" (3/3) ... [2020-08-18 17:35:43,426 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 [2020-08-18 17:35:43,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:35:43,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:35:43,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:35:43,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:35:43,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:35:43,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:35:43,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:35:43,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:35:43,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:35:43,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:35:43,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:35:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 17:35:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:35:43,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:35:43,547 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] [2020-08-18 17:35:43,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:35:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:35:43,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 17:35:43,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:35:43,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016238614] [2020-08-18 17:35:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:35:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,382 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:35:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:35:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:35:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:35:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:35:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 17:35:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 17:35:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 17:35:44,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016238614] [2020-08-18 17:35:44,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:35:44,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 17:35:44,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032790888] [2020-08-18 17:35:44,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:35:44,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:35:44,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:35:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:35:44,626 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 17:35:44,897 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:35:45,534 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 17:35:45,831 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 17:35:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:35:51,388 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 17:35:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:35:51,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 17:35:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:35:51,409 INFO L225 Difference]: With dead ends: 945 [2020-08-18 17:35:51,409 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 17:35:51,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:35:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 17:35:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 17:35:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 17:35:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 17:35:51,595 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 17:35:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:35:51,596 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 17:35:51,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:35:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 17:35:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 17:35:51,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:35:51,607 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] [2020-08-18 17:35:51,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:35:51,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:35:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:35:51,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 17:35:51,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:35:51,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490252044] [2020-08-18 17:35:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:35:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,014 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:35:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:35:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:35:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:35:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:35:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:35:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:35:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:35:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:35:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:35:52,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490252044] [2020-08-18 17:35:52,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:35:52,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:35:52,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147018297] [2020-08-18 17:35:52,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:35:52,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:35:52,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:35:52,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:35:52,160 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 17:35:52,412 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:35:53,105 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 17:35:54,309 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:36:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:00,194 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 17:36:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:36:00,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 17:36:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:00,206 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 17:36:00,206 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 17:36:00,209 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 [2020-08-18 17:36:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 17:36:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 17:36:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 17:36:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 17:36:00,327 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 17:36:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:00,327 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 17:36:00,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 17:36:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 17:36:00,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:00,330 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] [2020-08-18 17:36:00,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:36:00,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 17:36:00,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:00,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107507656] [2020-08-18 17:36:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,681 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:36:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:36:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:36:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:36:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:36:00,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107507656] [2020-08-18 17:36:00,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:00,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:36:00,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156719629] [2020-08-18 17:36:00,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:36:00,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:36:00,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:36:00,908 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 17:36:01,141 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:36:01,543 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 17:36:01,819 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:36:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:07,720 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 17:36:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:36:07,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 17:36:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:07,740 INFO L225 Difference]: With dead ends: 895 [2020-08-18 17:36:07,740 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 17:36:07,743 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 [2020-08-18 17:36:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 17:36:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 17:36:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 17:36:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 17:36:07,885 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 17:36:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:07,888 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 17:36:07,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 17:36:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 17:36:07,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:07,893 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] [2020-08-18 17:36:07,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:36:07,894 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 17:36:07,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:07,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258519767] [2020-08-18 17:36:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,259 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:36:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:36:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:36:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:36:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:36:08,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258519767] [2020-08-18 17:36:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:36:08,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217125335] [2020-08-18 17:36:08,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:36:08,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:36:08,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:36:08,547 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 17:36:08,853 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:36:09,211 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 17:36:09,455 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:36:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:15,466 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 17:36:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:36:15,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 17:36:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:15,473 INFO L225 Difference]: With dead ends: 894 [2020-08-18 17:36:15,474 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 17:36:15,475 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 [2020-08-18 17:36:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 17:36:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 17:36:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 17:36:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 17:36:15,575 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 17:36:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:15,576 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 17:36:15,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 17:36:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 17:36:15,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:15,579 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] [2020-08-18 17:36:15,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:36:15,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 17:36:15,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:15,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880646029] [2020-08-18 17:36:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:15,894 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:36:15,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:36:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:36:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:36:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:36:16,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880646029] [2020-08-18 17:36:16,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:16,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:36:16,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436467769] [2020-08-18 17:36:16,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:36:16,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:36:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:36:16,115 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 17:36:16,336 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:36:16,669 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 17:36:16,964 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:36:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:21,889 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 17:36:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:36:21,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 17:36:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:21,897 INFO L225 Difference]: With dead ends: 893 [2020-08-18 17:36:21,897 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 17:36:21,898 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 [2020-08-18 17:36:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 17:36:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 17:36:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 17:36:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 17:36:21,978 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 17:36:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:21,979 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 17:36:21,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 17:36:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 17:36:21,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:21,980 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] [2020-08-18 17:36:21,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:36:21,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 17:36:21,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:21,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388144546] [2020-08-18 17:36:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,286 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:36:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:36:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:36:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:36:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:36:22,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388144546] [2020-08-18 17:36:22,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:22,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:36:22,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191820941] [2020-08-18 17:36:22,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:36:22,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:36:22,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:36:22,448 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 17:36:22,709 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:36:23,078 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 17:36:23,344 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:36:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:27,859 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-18 17:36:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:36:27,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 17:36:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:27,870 INFO L225 Difference]: With dead ends: 892 [2020-08-18 17:36:27,870 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 17:36:27,871 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 [2020-08-18 17:36:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 17:36:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-18 17:36:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-18 17:36:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-18 17:36:27,981 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-18 17:36:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:27,982 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-18 17:36:27,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-18 17:36:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 17:36:27,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:36:27,983 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] [2020-08-18 17:36:27,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:36:27,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:36:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:36:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-18 17:36:27,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:36:27,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662079401] [2020-08-18 17:36:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:36:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,292 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:36:28,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:36:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:36:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:36:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:36:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 17:36:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:36:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:36:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:36:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:36:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:36:28,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662079401] [2020-08-18 17:36:28,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:36:28,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:36:28,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247275925] [2020-08-18 17:36:28,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:36:28,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:36:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:36:28,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:36:28,424 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-18 17:36:28,657 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:36:28,957 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 17:36:29,234 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:36:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:36:33,552 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-18 17:36:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 17:36:33,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-18 17:36:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:36:33,554 INFO L225 Difference]: With dead ends: 889 [2020-08-18 17:36:33,554 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:36:33,558 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 [2020-08-18 17:36:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:36:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:36:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:36:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:36:33,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-18 17:36:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:36:33,560 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:36:33,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:36:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:36:33,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:36:33,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:36:33,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 17:36:34,039 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-18 17:36:34,171 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30