/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 01:40:02,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:40:02,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:40:03,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:40:03,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:40:03,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:40:03,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:40:03,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:40:03,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:40:03,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:40:03,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:40:03,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:40:03,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:40:03,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:40:03,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:40:03,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:40:03,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:40:03,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:40:03,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:40:03,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:40:03,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:40:03,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:40:03,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:40:03,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:40:03,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:40:03,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:40:03,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:40:03,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:40:03,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:40:03,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:40:03,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:40:03,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:40:03,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:40:03,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:40:03,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:40:03,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:40:03,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:40:03,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:40:03,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:40:03,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:40:03,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:40:03,080 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 01:40:03,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:40:03,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:40:03,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:40:03,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:40:03,118 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:40:03,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:40:03,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:40:03,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:40:03,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:40:03,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:40:03,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:40:03,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:40:03,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:40:03,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:40:03,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:40:03,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:40:03,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:40:03,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:40:03,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:40:03,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:40:03,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:40:03,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 01:40:03,123 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:40:03,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:40:03,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:40:03,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:40:03,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:40:03,446 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:40:03,447 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 01:40:03,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8d930c/134cb557f786454fbf38e058b633bcae/FLAGeb0cf5905 [2020-08-19 01:40:04,344 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:40:04,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 01:40:04,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8d930c/134cb557f786454fbf38e058b633bcae/FLAGeb0cf5905 [2020-08-19 01:40:04,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab8d930c/134cb557f786454fbf38e058b633bcae [2020-08-19 01:40:04,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:40:04,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:40:04,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:04,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:40:04,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:40:04,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:04" (1/1) ... [2020-08-19 01:40:04,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27005f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:04, skipping insertion in model container [2020-08-19 01:40:04,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:04" (1/1) ... [2020-08-19 01:40:04,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:40:05,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:40:06,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:06,439 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:40:06,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:06,901 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:40:06,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06 WrapperNode [2020-08-19 01:40:06,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:06,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:40:06,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:40:06,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:40:06,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:06,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:06,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:06,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:07,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:07,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:07,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (1/1) ... [2020-08-19 01:40:07,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:40:07,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:40:07,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:40:07,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:40:07,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (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 01:40:07,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:40:07,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:40:07,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:40:07,257 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-19 01:40:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 01:40:07,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-19 01:40:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-19 01:40:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 01:40:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:40:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 01:40:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 01:40:07,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 01:40:07,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 01:40:07,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 01:40:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 01:40:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 01:40:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 01:40:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-19 01:40:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-19 01:40:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-19 01:40:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-19 01:40:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-19 01:40:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-19 01:40:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-19 01:40:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-19 01:40:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-19 01:40:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-19 01:40:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 01:40:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-19 01:40:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-19 01:40:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-19 01:40:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-19 01:40:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-19 01:40:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 01:40:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-19 01:40:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 01:40:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 01:40:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-19 01:40:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-19 01:40:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-19 01:40:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-19 01:40:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-19 01:40:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-19 01:40:07,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-19 01:40:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-19 01:40:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-19 01:40:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-19 01:40:07,277 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-19 01:40:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 01:40:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 01:40:07,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 01:40:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:40:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 01:40:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 01:40:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-19 01:40:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-19 01:40:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:40:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 01:40:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 01:40:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:40:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-19 01:40:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-19 01:40:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 01:40:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-19 01:40:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 01:40:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 01:40:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-19 01:40:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-19 01:40:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 01:40:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 01:40:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:40:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:40:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:40:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-19 01:40:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 01:40:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:40:07,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:40:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:40:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 01:40:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 01:40:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 01:40:07,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 01:40:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 01:40:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 01:40:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 01:40:07,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-19 01:40:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-19 01:40:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-19 01:40:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-19 01:40:07,360 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-19 01:40:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-19 01:40:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-19 01:40:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-19 01:40:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 01:40:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-19 01:40:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-19 01:40:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-19 01:40:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-19 01:40:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-19 01:40:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-19 01:40:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-19 01:40:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-19 01:40:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-19 01:40:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-19 01:40:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:40:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:40:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:40:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-19 01:40:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:40:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-19 01:40:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-19 01:40:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-19 01:40:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-19 01:40:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-19 01:40:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-19 01:40:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-19 01:40:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 01:40:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 01:40:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 01:40:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-19 01:40:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:40:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-19 01:40:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-19 01:40:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-19 01:40:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-19 01:40:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-19 01:40:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-19 01:40:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-19 01:40:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-19 01:40:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 01:40:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:40:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:40:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:40:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:40:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:40:08,425 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 01:40:08,994 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-19 01:40:09,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:40:09,452 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:40:09,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:09 BoogieIcfgContainer [2020-08-19 01:40:09,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:40:09,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:40:09,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:40:09,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:40:09,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:40:04" (1/3) ... [2020-08-19 01:40:09,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63982a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:09, skipping insertion in model container [2020-08-19 01:40:09,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:06" (2/3) ... [2020-08-19 01:40:09,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63982a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:09, skipping insertion in model container [2020-08-19 01:40:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:09" (3/3) ... [2020-08-19 01:40:09,467 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 01:40:09,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:40:09,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:40:09,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:40:09,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:40:09,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:40:09,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:40:09,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:40:09,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:40:09,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:40:09,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:40:09,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:40:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-19 01:40:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:40:09,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:09,582 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 01:40:09,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-19 01:40:09,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:09,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342260157] [2020-08-19 01:40:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,454 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:40:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:40:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:10,734 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 01:40:10,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342260157] [2020-08-19 01:40:10,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:40:10,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 01:40:10,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464812488] [2020-08-19 01:40:10,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:40:10,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:10,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:40:10,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:40:10,760 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-19 01:40:11,030 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:11,703 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 01:40:12,004 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-19 01:40:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:17,886 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-19 01:40:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:40:17,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-19 01:40:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:17,909 INFO L225 Difference]: With dead ends: 945 [2020-08-19 01:40:17,909 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 01:40:17,919 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 01:40:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 01:40:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-19 01:40:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 01:40:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-19 01:40:18,059 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-19 01:40:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:18,060 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-19 01:40:18,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:40:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-19 01:40:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 01:40:18,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:18,065 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 01:40:18,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:40:18,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-19 01:40:18,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:18,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564837520] [2020-08-19 01:40:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,512 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:40:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,703 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 01:40:18,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564837520] [2020-08-19 01:40:18,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:18,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:18,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567811863] [2020-08-19 01:40:18,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:18,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:18,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:18,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:18,707 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-19 01:40:18,936 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:19,603 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:40:20,790 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:40:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:28,521 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-19 01:40:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:40:28,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-19 01:40:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:28,532 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 01:40:28,532 INFO L226 Difference]: Without dead ends: 893 [2020-08-19 01:40:28,535 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 01:40:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-19 01:40:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-19 01:40:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-19 01:40:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-19 01:40:28,646 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-19 01:40:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:28,646 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-19 01:40:28,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:40:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-19 01:40:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 01:40:28,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:28,650 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 01:40:28,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:40:28,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-19 01:40:28,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:28,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622848764] [2020-08-19 01:40:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,062 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:40:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:29,324 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 01:40:29,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622848764] [2020-08-19 01:40:29,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:29,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:29,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622246388] [2020-08-19 01:40:29,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:29,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:29,327 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-19 01:40:29,603 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:29,923 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 01:40:30,209 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:40:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:34,833 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-19 01:40:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:40:34,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-19 01:40:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:34,847 INFO L225 Difference]: With dead ends: 895 [2020-08-19 01:40:34,847 INFO L226 Difference]: Without dead ends: 892 [2020-08-19 01:40:34,849 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 01:40:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-19 01:40:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-19 01:40:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-19 01:40:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-19 01:40:35,007 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-19 01:40:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:35,009 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-19 01:40:35,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:40:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-19 01:40:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:40:35,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:35,015 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 01:40:35,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:40:35,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:35,016 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-19 01:40:35,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:35,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285592236] [2020-08-19 01:40:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,476 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:35,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:40:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:35,657 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 01:40:35,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285592236] [2020-08-19 01:40:35,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:35,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:35,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764209880] [2020-08-19 01:40:35,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:35,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:35,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:35,660 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-19 01:40:35,876 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:36,189 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 01:40:36,473 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:40:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:40,757 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-19 01:40:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:40:40,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 01:40:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:40,765 INFO L225 Difference]: With dead ends: 894 [2020-08-19 01:40:40,765 INFO L226 Difference]: Without dead ends: 891 [2020-08-19 01:40:40,766 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 01:40:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-19 01:40:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-19 01:40:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 01:40:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-19 01:40:40,859 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-19 01:40:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:40,859 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-19 01:40:40,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:40:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-19 01:40:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:40:40,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:40,862 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 01:40:40,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:40:40,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:40,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-19 01:40:40,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:40,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138070000] [2020-08-19 01:40:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,206 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:40:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:41,348 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 01:40:41,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138070000] [2020-08-19 01:40:41,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:41,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:41,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859680657] [2020-08-19 01:40:41,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:41,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:41,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:41,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:41,353 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-19 01:40:41,579 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:41,901 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:40:42,162 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:40:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:47,766 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-19 01:40:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:40:47,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 01:40:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:47,777 INFO L225 Difference]: With dead ends: 893 [2020-08-19 01:40:47,777 INFO L226 Difference]: Without dead ends: 890 [2020-08-19 01:40:47,778 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 01:40:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-19 01:40:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-19 01:40:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 01:40:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-19 01:40:47,896 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-19 01:40:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:47,896 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-19 01:40:47,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:40:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-19 01:40:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:40:47,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:47,898 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 01:40:47,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:40:47,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-19 01:40:47,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:47,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809224637] [2020-08-19 01:40:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,273 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:40:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,424 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 01:40:48,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809224637] [2020-08-19 01:40:48,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:48,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:48,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003160444] [2020-08-19 01:40:48,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:48,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:48,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:48,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:48,428 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-19 01:40:48,663 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:48,962 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:40:49,225 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:40:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:55,611 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-19 01:40:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:40:55,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 01:40:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:55,619 INFO L225 Difference]: With dead ends: 892 [2020-08-19 01:40:55,619 INFO L226 Difference]: Without dead ends: 889 [2020-08-19 01:40:55,620 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 01:40:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-19 01:40:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-19 01:40:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-19 01:40:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-19 01:40:55,705 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-19 01:40:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:55,706 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-19 01:40:55,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:40:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-19 01:40:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 01:40:55,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:55,708 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 01:40:55,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:40:55,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-19 01:40:55,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:55,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034462737] [2020-08-19 01:40:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,007 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:40:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:40:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:40:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:40:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:40:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,137 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 01:40:56,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034462737] [2020-08-19 01:40:56,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:56,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:40:56,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871394672] [2020-08-19 01:40:56,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:40:56,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:40:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:40:56,139 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-19 01:40:56,401 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:40:56,706 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 01:40:56,986 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:41:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:41:01,769 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-19 01:41:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:41:01,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-19 01:41:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:41:01,771 INFO L225 Difference]: With dead ends: 889 [2020-08-19 01:41:01,771 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:41:01,775 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 01:41:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:41:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:41:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:41:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:41:01,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-19 01:41:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:41:01,776 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:41:01,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:41:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:41:01,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:41:01,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:41:01,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:41:02,209 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-19 01:41:02,322 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30