/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-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 0.1.25-177f698 [2020-08-22 00:18:26,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:18:26,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:18:26,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:18:26,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:18:26,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:18:26,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:18:26,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:18:26,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:18:26,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:18:26,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:18:26,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:18:26,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:18:26,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:18:26,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:18:26,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:18:26,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:18:26,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:18:26,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:18:26,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:18:26,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:18:26,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:18:26,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:18:26,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:18:26,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:18:26,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:18:26,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:18:26,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:18:26,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:18:26,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:18:26,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:18:26,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:18:26,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:18:26,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:18:26,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:18:26,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:18:26,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:18:26,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:18:26,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:18:26,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:18:26,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:18:26,145 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 [2020-08-22 00:18:26,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:18:26,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:18:26,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:18:26,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:18:26,170 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:18:26,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:18:26,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:18:26,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:18:26,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:18:26,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:18:26,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:18:26,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:18:26,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:18:26,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:18:26,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:18:26,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:18:26,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:18:26,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:18:26,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:18:26,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:18:26,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:18:26,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:18:26,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:18:26,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:18:26,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:18:26,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:18:26,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 00:18:26,175 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-22 00:18:26,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:18:26,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:18:26,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:18:26,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:18:26,504 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:18:26,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 00:18:26,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ab8a5b4/b669fcf0bccf4b05b1bf0048fa295f0d/FLAG91c811b94 [2020-08-22 00:18:27,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:18:27,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 00:18:27,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ab8a5b4/b669fcf0bccf4b05b1bf0048fa295f0d/FLAG91c811b94 [2020-08-22 00:18:27,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2ab8a5b4/b669fcf0bccf4b05b1bf0048fa295f0d [2020-08-22 00:18:27,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:18:27,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:18:27,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:18:27,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:18:27,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:18:27,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:18:27" (1/1) ... [2020-08-22 00:18:27,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2b0359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:27, skipping insertion in model container [2020-08-22 00:18:27,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:18:27" (1/1) ... [2020-08-22 00:18:27,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:18:28,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:18:29,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:18:29,480 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:18:29,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:18:29,906 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:18:29,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29 WrapperNode [2020-08-22 00:18:29,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:18:29,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:18:29,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:18:29,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:18:29,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:29,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:29,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:29,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:30,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:30,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:30,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (1/1) ... [2020-08-22 00:18:30,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:18:30,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:18:30,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:18:30,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:18:30,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (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 [2020-08-22 00:18:30,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:18:30,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:18:30,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 00:18:30,158 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-22 00:18:30,158 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 00:18:30,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 00:18:30,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 00:18:30,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 00:18:30,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:18:30,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 00:18:30,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 00:18:30,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 00:18:30,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 00:18:30,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 00:18:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 00:18:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 00:18:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 00:18:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-22 00:18:30,161 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-22 00:18:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-22 00:18:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-22 00:18:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-22 00:18:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-22 00:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-22 00:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-22 00:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-22 00:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-22 00:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 00:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-22 00:18:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:18:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-22 00:18:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-22 00:18:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-22 00:18:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-22 00:18:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-22 00:18:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-22 00:18:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-22 00:18:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-22 00:18:30,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-22 00:18:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 00:18:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 00:18:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-22 00:18:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-22 00:18:30,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-22 00:18:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-22 00:18:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-22 00:18:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 00:18:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-22 00:18:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-22 00:18:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-22 00:18:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-22 00:18:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-22 00:18:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-22 00:18:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-22 00:18:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-22 00:18:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-22 00:18:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-22 00:18:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-22 00:18:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-22 00:18:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 00:18:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 00:18:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 00:18:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:18:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 00:18:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 00:18:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:18:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-22 00:18:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-22 00:18:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-22 00:18:30,174 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 00:18:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 00:18:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:18:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 00:18:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:18:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-22 00:18:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 00:18:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:18:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:18:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:18:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 00:18:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 00:18:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-22 00:18:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-22 00:18:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-22 00:18:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-22 00:18:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-22 00:18:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-22 00:18:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-22 00:18:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-22 00:18:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-22 00:18:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-22 00:18:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-22 00:18:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-22 00:18:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-22 00:18:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-22 00:18:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:18:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:18:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:18:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-22 00:18:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:18:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-22 00:18:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-22 00:18:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-22 00:18:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-22 00:18:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 00:18:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-22 00:18:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-22 00:18:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:18:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:18:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:18:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 00:18:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:18:31,135 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 00:18:31,698 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-22 00:18:32,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:18:32,230 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 00:18:32,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:18:32 BoogieIcfgContainer [2020-08-22 00:18:32,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:18:32,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:18:32,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:18:32,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:18:32,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:18:27" (1/3) ... [2020-08-22 00:18:32,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39279669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:18:32, skipping insertion in model container [2020-08-22 00:18:32,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:18:29" (2/3) ... [2020-08-22 00:18:32,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39279669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:18:32, skipping insertion in model container [2020-08-22 00:18:32,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:18:32" (3/3) ... [2020-08-22 00:18:32,254 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 [2020-08-22 00:18:32,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:18:32,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:18:32,289 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:18:32,315 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:18:32,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:18:32,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:18:32,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:18:32,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:18:32,316 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:18:32,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:18:32,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:18:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-22 00:18:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:18:32,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:18:32,359 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] [2020-08-22 00:18:32,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:18:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:18:32,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-22 00:18:32,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:18:32,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945209206] [2020-08-22 00:18:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:18:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,377 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:18:33,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:18:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:18:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:18:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:18:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 00:18:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:18:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 00:18:33,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945209206] [2020-08-22 00:18:33,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:18:33,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 00:18:33,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583238021] [2020-08-22 00:18:33,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:18:33,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:18:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:18:33,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:18:33,698 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-22 00:18:34,008 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:18:34,747 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 00:18:35,032 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-22 00:18:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:18:41,043 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-22 00:18:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:18:41,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-22 00:18:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:18:41,066 INFO L225 Difference]: With dead ends: 945 [2020-08-22 00:18:41,067 INFO L226 Difference]: Without dead ends: 492 [2020-08-22 00:18:41,082 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 [2020-08-22 00:18:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-22 00:18:41,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-22 00:18:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 00:18:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-22 00:18:41,236 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-22 00:18:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:18:41,237 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-22 00:18:41,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:18:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-22 00:18:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 00:18:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:18:41,241 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] [2020-08-22 00:18:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:18:41,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:18:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:18:41,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-22 00:18:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:18:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935609705] [2020-08-22 00:18:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:18:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,576 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:18:41,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:18:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:18:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:18:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:18:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:18:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:18:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:18:41,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935609705] [2020-08-22 00:18:41,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:18:41,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:18:41,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29241175] [2020-08-22 00:18:41,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:18:41,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:18:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:18:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:18:41,720 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-22 00:18:41,989 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:18:42,631 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 00:18:43,820 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:18:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:18:49,658 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-22 00:18:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:18:49,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-22 00:18:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:18:49,669 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 00:18:49,669 INFO L226 Difference]: Without dead ends: 893 [2020-08-22 00:18:49,672 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 [2020-08-22 00:18:49,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-22 00:18:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-22 00:18:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-22 00:18:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-22 00:18:49,790 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-22 00:18:49,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:18:49,791 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-22 00:18:49,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:18:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-22 00:18:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 00:18:49,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:18:49,794 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] [2020-08-22 00:18:49,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:18:49,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:18:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:18:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-22 00:18:49,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:18:49,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418870533] [2020-08-22 00:18:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:18:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,187 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:18:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:18:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:18:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:18:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:18:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:18:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:18:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:18:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:18:50,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418870533] [2020-08-22 00:18:50,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:18:50,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:18:50,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251460445] [2020-08-22 00:18:50,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:18:50,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:18:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:18:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:18:50,342 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-22 00:18:50,612 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:18:50,951 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 00:18:51,207 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:18:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:18:57,521 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-22 00:18:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:18:57,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-22 00:18:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:18:57,530 INFO L225 Difference]: With dead ends: 895 [2020-08-22 00:18:57,530 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 00:18:57,532 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 [2020-08-22 00:18:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 00:18:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-22 00:18:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-22 00:18:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-22 00:18:57,624 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-22 00:18:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:18:57,624 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-22 00:18:57,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:18:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-22 00:18:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 00:18:57,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:18:57,628 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] [2020-08-22 00:18:57,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:18:57,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:18:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:18:57,628 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-22 00:18:57,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:18:57,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700079909] [2020-08-22 00:18:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:18:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,019 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:18:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:18:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:18:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:18:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:18:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:18:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:18:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:18:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:18:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:18:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:18:58,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700079909] [2020-08-22 00:18:58,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:18:58,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:18:58,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457948382] [2020-08-22 00:18:58,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:18:58,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:18:58,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:18:58,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:18:58,315 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-22 00:18:58,543 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:18:58,851 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 00:18:59,112 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:19:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:19:04,122 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-22 00:19:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:19:04,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 00:19:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:19:04,131 INFO L225 Difference]: With dead ends: 894 [2020-08-22 00:19:04,132 INFO L226 Difference]: Without dead ends: 891 [2020-08-22 00:19:04,133 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 [2020-08-22 00:19:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-22 00:19:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-22 00:19:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-22 00:19:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-22 00:19:04,247 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-22 00:19:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:19:04,247 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-22 00:19:04,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:19:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-22 00:19:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 00:19:04,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:19:04,250 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] [2020-08-22 00:19:04,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:19:04,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:19:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:19:04,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-22 00:19:04,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:19:04,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873953139] [2020-08-22 00:19:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:19:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,625 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:19:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:19:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:19:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:19:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:19:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:19:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:19:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:19:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:19:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:19:04,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873953139] [2020-08-22 00:19:04,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:19:04,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:19:04,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895541759] [2020-08-22 00:19:04,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:19:04,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:19:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:19:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:19:04,769 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-22 00:19:04,970 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:19:05,259 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 00:19:05,562 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:19:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:19:10,702 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-22 00:19:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:19:10,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 00:19:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:19:10,709 INFO L225 Difference]: With dead ends: 893 [2020-08-22 00:19:10,710 INFO L226 Difference]: Without dead ends: 890 [2020-08-22 00:19:10,711 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 [2020-08-22 00:19:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-22 00:19:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-22 00:19:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-22 00:19:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-22 00:19:10,794 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-22 00:19:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:19:10,794 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-22 00:19:10,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:19:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-22 00:19:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:19:10,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:19:10,796 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] [2020-08-22 00:19:10,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:19:10,797 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:19:10,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:19:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-22 00:19:10,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:19:10,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383092938] [2020-08-22 00:19:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:19:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,089 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:19:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:19:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:19:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:19:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:19:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:19:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:19:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:19:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:19:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:19:11,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383092938] [2020-08-22 00:19:11,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:19:11,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:19:11,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518641945] [2020-08-22 00:19:11,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:19:11,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:19:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:19:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:19:11,317 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-22 00:19:11,541 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:19:11,862 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 00:19:12,134 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:19:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:19:18,754 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-22 00:19:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:19:18,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 00:19:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:19:18,761 INFO L225 Difference]: With dead ends: 892 [2020-08-22 00:19:18,762 INFO L226 Difference]: Without dead ends: 889 [2020-08-22 00:19:18,763 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 [2020-08-22 00:19:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-22 00:19:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-22 00:19:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-22 00:19:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-22 00:19:18,858 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-22 00:19:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:19:18,859 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-22 00:19:18,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:19:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-22 00:19:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 00:19:18,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:19:18,861 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] [2020-08-22 00:19:18,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:19:18,862 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:19:18,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:19:18,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-22 00:19:18,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:19:18,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812456878] [2020-08-22 00:19:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:19:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,158 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:19:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:19:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:19:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:19:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:19:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 00:19:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:19:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:19:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:19:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:19:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:19:19,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812456878] [2020-08-22 00:19:19,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:19:19,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:19:19,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683919312] [2020-08-22 00:19:19,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:19:19,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:19:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:19:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:19:19,312 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-22 00:19:19,530 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:19:19,885 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 00:19:20,149 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:19:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:19:25,682 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-22 00:19:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:19:25,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-22 00:19:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:19:25,685 INFO L225 Difference]: With dead ends: 889 [2020-08-22 00:19:25,685 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:19:25,689 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 [2020-08-22 00:19:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:19:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:19:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:19:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:19:25,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-22 00:19:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:19:25,690 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:19:25,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:19:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:19:25,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:19:25,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:19:25,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:19:26,243 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-22 00:19:26,426 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30