/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:02:46,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:02:46,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:02:46,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:02:46,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:02:46,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:02:46,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:02:46,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:02:46,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:02:46,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:02:46,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:02:46,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:02:46,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:02:46,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:02:46,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:02:46,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:02:46,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:02:46,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:02:46,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:02:46,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:02:46,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:02:46,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:02:46,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:02:46,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:02:46,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:02:46,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:02:46,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:02:46,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:02:46,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:02:46,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:02:46,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:02:46,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:02:46,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:02:46,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:02:46,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:02:46,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:02:46,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:02:46,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:02:46,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:02:46,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:02:46,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:02:46,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 11:02:46,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:02:46,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:02:46,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:02:46,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:02:46,305 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:02:46,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:02:46,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:02:46,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:02:46,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:02:46,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:02:46,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:02:46,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:02:46,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:02:46,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:02:46,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:02:46,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:02:46,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:02:46,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:02:46,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:02:46,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:02:46,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:02:46,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:02:46,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:02:46,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:02:46,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:02:46,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:02:46,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:02:46,310 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 -> false [2020-08-18 11:02:46,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:02:46,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:02:46,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:02:46,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:02:46,633 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:02:46,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 11:02:46,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e720c61/5c9292bd8204430f984fe89be0b074a1/FLAG46b08352f [2020-08-18 11:02:47,503 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:02:47,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 11:02:47,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e720c61/5c9292bd8204430f984fe89be0b074a1/FLAG46b08352f [2020-08-18 11:02:47,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7e720c61/5c9292bd8204430f984fe89be0b074a1 [2020-08-18 11:02:47,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:02:47,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:02:47,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:47,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:02:47,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:02:47,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:47" (1/1) ... [2020-08-18 11:02:47,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:47, skipping insertion in model container [2020-08-18 11:02:47,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:47" (1/1) ... [2020-08-18 11:02:47,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:02:47,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:02:49,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:49,300 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:02:49,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:49,653 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:02:49,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49 WrapperNode [2020-08-18 11:02:49,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:49,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:02:49,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:02:49,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:02:49,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... [2020-08-18 11:02:49,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:02:49,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:02:49,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:02:49,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:02:49,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:02:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:02:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:02:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 11:02:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 11:02:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 11:02:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 11:02:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 11:02:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 11:02:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:02:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:02:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:02:49,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:02:49,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:02:49,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:02:49,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:02:49,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:02:49,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:02:49,936 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 11:02:49,936 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 11:02:49,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 11:02:49,938 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 11:02:49,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 11:02:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 11:02:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 11:02:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:02:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 11:02:49,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 11:02:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 11:02:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 11:02:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 11:02:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 11:02:49,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 11:02:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 11:02:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 11:02:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:02:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 11:02:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 11:02:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 11:02:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 11:02:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 11:02:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 11:02:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:02:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 11:02:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 11:02:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 11:02:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 11:02:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 11:02:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 11:02:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 11:02:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 11:02:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 11:02:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:02:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:02:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:02:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 11:02:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 11:02:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 11:02:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:02:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 11:02:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 11:02:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:02:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:02:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:02:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 11:02:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:02:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:02:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:02:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:02:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 11:02:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 11:02:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 11:02:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 11:02:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 11:02:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 11:02:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 11:02:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 11:02:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 11:02:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:02:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:02:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:02:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:02:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:02:51,236 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:02:51,811 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 11:02:52,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:02:52,323 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 11:02:52,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:52 BoogieIcfgContainer [2020-08-18 11:02:52,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:02:52,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:02:52,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:02:52,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:02:52,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:02:47" (1/3) ... [2020-08-18 11:02:52,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47611230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:52, skipping insertion in model container [2020-08-18 11:02:52,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:49" (2/3) ... [2020-08-18 11:02:52,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47611230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:52, skipping insertion in model container [2020-08-18 11:02:52,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:52" (3/3) ... [2020-08-18 11:02:52,339 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 11:02:52,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:02:52,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:02:52,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:02:52,400 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:02:52,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:02:52,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:02:52,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:02:52,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:02:52,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:02:52,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:02:52,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:02:52,430 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 11:02:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:02:52,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:02:52,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:02:52,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:02:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:02:52,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 11:02:52,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:02:52,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897738910] [2020-08-18 11:02:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:02:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,298 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:02:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:02:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:02:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:02:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:02:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 11:02:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:02:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 11:02:53,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897738910] [2020-08-18 11:02:53,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:02:53,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 11:02:53,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826023121] [2020-08-18 11:02:53,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:02:53,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:02:53,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:02:53,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:02:53,570 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 11:02:53,895 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:02:54,732 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:02:55,091 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 11:03:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:00,758 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 11:03:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:00,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 11:03:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:00,800 INFO L225 Difference]: With dead ends: 945 [2020-08-18 11:03:00,801 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 11:03:00,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 11:03:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 11:03:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 11:03:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 11:03:01,061 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 11:03:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:01,061 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 11:03:01,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:03:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 11:03:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 11:03:01,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:01,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:01,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:03:01,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 11:03:01,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:01,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790849740] [2020-08-18 11:03:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,514 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:03:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:03:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:03:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 11:03:01,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790849740] [2020-08-18 11:03:01,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:01,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:01,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038751568] [2020-08-18 11:03:01,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:01,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:01,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:01,716 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 11:03:02,012 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:03:02,823 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:03:04,226 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:03:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:13,756 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 11:03:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:03:13,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 11:03:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:13,765 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 11:03:13,766 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 11:03:13,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 11:03:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 11:03:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 11:03:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 11:03:13,873 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 11:03:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:13,874 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 11:03:13,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 11:03:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 11:03:13,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:13,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:13,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:03:13,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:13,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 11:03:13,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:13,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042749631] [2020-08-18 11:03:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,260 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:03:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:03:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 11:03:14,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042749631] [2020-08-18 11:03:14,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:14,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:14,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481177110] [2020-08-18 11:03:14,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:14,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:14,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:14,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:14,478 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 11:03:14,825 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:03:15,305 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:03:15,634 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:03:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:22,403 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 11:03:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:22,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 11:03:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:22,410 INFO L225 Difference]: With dead ends: 895 [2020-08-18 11:03:22,410 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 11:03:22,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 11:03:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 11:03:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 11:03:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 11:03:22,523 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 11:03:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:22,524 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 11:03:22,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 11:03:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 11:03:22,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:22,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:22,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:03:22,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:22,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:22,528 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 11:03:22,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:22,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068056568] [2020-08-18 11:03:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:22,984 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:03:22,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:03:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 11:03:23,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068056568] [2020-08-18 11:03:23,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:23,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:23,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442249470] [2020-08-18 11:03:23,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:23,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:23,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:23,181 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 11:03:23,475 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:03:23,872 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:03:24,233 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:03:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:31,910 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 11:03:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:31,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 11:03:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:31,918 INFO L225 Difference]: With dead ends: 894 [2020-08-18 11:03:31,918 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 11:03:31,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 11:03:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 11:03:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 11:03:32,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 11:03:32,042 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 11:03:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:32,042 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 11:03:32,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 11:03:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 11:03:32,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:32,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:32,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:03:32,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:32,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 11:03:32,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:32,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111758099] [2020-08-18 11:03:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,438 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:03:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:03:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 11:03:32,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111758099] [2020-08-18 11:03:32,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:32,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:32,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139771249] [2020-08-18 11:03:32,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:32,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:32,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:32,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:32,614 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 11:03:32,888 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:03:33,306 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:03:33,651 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:03:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:39,791 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 11:03:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:39,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 11:03:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:39,799 INFO L225 Difference]: With dead ends: 893 [2020-08-18 11:03:39,799 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 11:03:39,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 11:03:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 11:03:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 11:03:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 11:03:39,887 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 11:03:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 11:03:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 11:03:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 11:03:39,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:39,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:03:39,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:03:39,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:39,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:39,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 11:03:39,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:39,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862326852] [2020-08-18 11:03:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,276 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:03:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:03:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:03:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:03:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:03:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 11:03:40,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862326852] [2020-08-18 11:03:40,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:40,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:03:40,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079003600] [2020-08-18 11:03:40,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:03:40,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:40,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:03:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:03:40,415 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 11:03:40,709 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:03:41,091 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:03:41,447 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189