/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=SMALLESTAMONGWIDE --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 05:59:07,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:59:07,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:59:07,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:59:07,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:59:07,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:59:07,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:59:07,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:59:07,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:59:07,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:59:07,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:59:07,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:59:07,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:59:07,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:59:07,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:59:07,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:59:07,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:59:07,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:59:07,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:59:07,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:59:07,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:59:07,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:59:07,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:59:07,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:59:07,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:59:07,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:59:07,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:59:07,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:59:07,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:59:07,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:59:07,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:59:07,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:59:07,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:59:07,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:59:07,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:59:07,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:59:07,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:59:07,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:59:07,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:59:07,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:59:07,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:59:07,106 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 05:59:07,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:59:07,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:59:07,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:59:07,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:59:07,130 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:59:07,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:59:07,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:59:07,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:59:07,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:59:07,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:59:07,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:59:07,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:59:07,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:59:07,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:59:07,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:59:07,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:59:07,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:59:07,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:59:07,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:59:07,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:59:07,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:59:07,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:59:07,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:59:07,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:59:07,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:59:07,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:59:07,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:59:07,135 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:59:07,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:59:07,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:59:07,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:59:07,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:59:07,461 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:59:07,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 05:59:07,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c64ad13/82de9d7c22504591bf62c7d96ef32dcd/FLAG086892854 [2020-08-22 05:59:08,327 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:59:08,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 05:59:08,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c64ad13/82de9d7c22504591bf62c7d96ef32dcd/FLAG086892854 [2020-08-22 05:59:08,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34c64ad13/82de9d7c22504591bf62c7d96ef32dcd [2020-08-22 05:59:08,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:59:08,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:59:08,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:08,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:59:08,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:59:08,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:08" (1/1) ... [2020-08-22 05:59:08,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1223d993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:08, skipping insertion in model container [2020-08-22 05:59:08,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:08" (1/1) ... [2020-08-22 05:59:08,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:59:09,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:59:10,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:10,415 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:59:10,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:10,963 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:59:10,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10 WrapperNode [2020-08-22 05:59:10,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:10,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:59:10,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:59:10,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:59:10,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:10,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (1/1) ... [2020-08-22 05:59:11,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:59:11,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:59:11,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:59:11,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:59:11,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (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 05:59:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:59:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:59:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:59:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-22 05:59:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 05:59:11,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 05:59:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 05:59:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 05:59:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:59:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:59:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:59:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:59:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:59:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:59:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:59:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:59:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:59:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-22 05:59:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-22 05:59:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-22 05:59:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-22 05:59:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-22 05:59:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-22 05:59:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-22 05:59:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-22 05:59:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-22 05:59:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 05:59:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-22 05:59:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-22 05:59:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-22 05:59:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-22 05:59:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-22 05:59:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-22 05:59:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-22 05:59:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-22 05:59:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-22 05:59:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-22 05:59:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-22 05:59:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:59:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 05:59:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-22 05:59:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-22 05:59:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-22 05:59:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-22 05:59:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-22 05:59:11,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:59:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-22 05:59:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-22 05:59:11,296 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-22 05:59:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-22 05:59:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-22 05:59:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-22 05:59:11,297 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-22 05:59:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-22 05:59:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-22 05:59:11,298 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-22 05:59:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-22 05:59:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-22 05:59:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:59:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 05:59:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:59:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:59:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:59:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 05:59:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-22 05:59:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-22 05:59:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:59:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 05:59:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 05:59:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:59:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-22 05:59:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-22 05:59:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-22 05:59:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-22 05:59:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:59:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:59:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 05:59:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 05:59:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:59:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 05:59:11,309 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:59:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:59:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:59:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-22 05:59:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:59:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:59:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:59:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:59:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:59:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:59:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:59:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:59:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:59:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:59:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 05:59:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-22 05:59:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-22 05:59:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-22 05:59:11,314 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-22 05:59:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-22 05:59:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-22 05:59:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-22 05:59:11,315 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-22 05:59:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 05:59:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-22 05:59:11,316 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-22 05:59:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-22 05:59:11,317 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-22 05:59:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-22 05:59:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-22 05:59:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-22 05:59:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-22 05:59:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-22 05:59:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-22 05:59:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:59:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:59:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:59:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-22 05:59:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:59:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-22 05:59:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-22 05:59:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-22 05:59:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-22 05:59:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-22 05:59:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-22 05:59:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-22 05:59:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:59:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-22 05:59:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:59:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-22 05:59:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:59:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-22 05:59:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-22 05:59:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-22 05:59:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-22 05:59:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-22 05:59:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-22 05:59:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-22 05:59:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-22 05:59:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:59:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-22 05:59:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-22 05:59:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-22 05:59:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-22 05:59:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-22 05:59:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-22 05:59:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-22 05:59:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:59:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:59:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:59:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:59:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:59:12,848 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:59:13,460 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-22 05:59:14,028 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:59:14,029 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:59:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:14 BoogieIcfgContainer [2020-08-22 05:59:14,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:59:14,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:59:14,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:59:14,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:59:14,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:59:08" (1/3) ... [2020-08-22 05:59:14,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af39ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:14, skipping insertion in model container [2020-08-22 05:59:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:10" (2/3) ... [2020-08-22 05:59:14,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af39ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:14, skipping insertion in model container [2020-08-22 05:59:14,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:14" (3/3) ... [2020-08-22 05:59:14,046 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 05:59:14,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:59:14,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:59:14,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:59:14,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:59:14,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:59:14,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:59:14,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:59:14,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:59:14,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:59:14,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:59:14,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:59:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-22 05:59:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:59:14,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:14,153 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 05:59:14,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:14,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-22 05:59:14,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:14,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760902711] [2020-08-22 05:59:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,110 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:59:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:59:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 05:59:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:59:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:15,400 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 05:59:15,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760902711] [2020-08-22 05:59:15,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:59:15,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 05:59:15,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270315408] [2020-08-22 05:59:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:59:15,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:15,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:59:15,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:59:15,429 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-22 05:59:15,741 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:59:16,523 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:59:16,866 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-22 05:59:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:25,049 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-22 05:59:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:59:25,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-22 05:59:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:25,089 INFO L225 Difference]: With dead ends: 945 [2020-08-22 05:59:25,090 INFO L226 Difference]: Without dead ends: 492 [2020-08-22 05:59:25,102 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 [2020-08-22 05:59:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-22 05:59:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-22 05:59:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 05:59:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-22 05:59:25,352 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-22 05:59:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:25,352 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-22 05:59:25,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:59:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-22 05:59:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 05:59:25,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:25,362 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 05:59:25,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:59:25,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-22 05:59:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:25,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369986556] [2020-08-22 05:59:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,864 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:59:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:59:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:59:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:59:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:26,048 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 05:59:26,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369986556] [2020-08-22 05:59:26,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:26,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:26,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841689686] [2020-08-22 05:59:26,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:26,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:26,053 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-22 05:59:26,469 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:59:27,214 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:59:28,597 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:59:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:35,459 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-22 05:59:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:59:35,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-22 05:59:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:35,469 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 05:59:35,469 INFO L226 Difference]: Without dead ends: 893 [2020-08-22 05:59:35,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:59:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-22 05:59:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-22 05:59:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-22 05:59:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-22 05:59:35,586 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-22 05:59:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:35,586 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-22 05:59:35,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:59:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-22 05:59:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:59:35,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:35,590 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 05:59:35,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:59:35,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-22 05:59:35,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:35,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682891551] [2020-08-22 05:59:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,242 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:59:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:59:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:59:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:36,609 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 05:59:36,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682891551] [2020-08-22 05:59:36,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:36,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:36,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426477960] [2020-08-22 05:59:36,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:36,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:36,611 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-22 05:59:36,935 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:59:37,337 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:59:37,664 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:59:43,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:43,987 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-22 05:59:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:59:43,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-22 05:59:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:43,996 INFO L225 Difference]: With dead ends: 895 [2020-08-22 05:59:43,997 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 05:59:43,998 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 [2020-08-22 05:59:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 05:59:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-22 05:59:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-22 05:59:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-22 05:59:44,137 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-22 05:59:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:44,140 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-22 05:59:44,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:59:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-22 05:59:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:59:44,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:44,146 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 05:59:44,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:59:44,147 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:44,147 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-22 05:59:44,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:44,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020471624] [2020-08-22 05:59:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,619 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:59:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:59:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:59:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,795 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 05:59:44,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020471624] [2020-08-22 05:59:44,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:44,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:44,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723396853] [2020-08-22 05:59:44,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:44,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:44,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:44,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:44,798 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-22 05:59:45,065 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:59:45,429 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:59:45,766 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:59:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:53,100 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-22 05:59:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:59:53,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 05:59:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:53,108 INFO L225 Difference]: With dead ends: 894 [2020-08-22 05:59:53,108 INFO L226 Difference]: Without dead ends: 891 [2020-08-22 05:59:53,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:59:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-22 05:59:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-22 05:59:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-22 05:59:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-22 05:59:53,201 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-22 05:59:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:53,201 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-22 05:59:53,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:59:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-22 05:59:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:59:53,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:53,203 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 05:59:53,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:59:53,204 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-22 05:59:53,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:53,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393971416] [2020-08-22 05:59:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,611 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:59:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:59:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:59:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:59:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:59:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:59:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:53,838 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 05:59:53,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393971416] [2020-08-22 05:59:53,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:53,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:59:53,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535668401] [2020-08-22 05:59:53,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:59:53,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:59:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:59:53,844 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-22 05:59:54,139 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:59:54,509 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:59:54,864 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:00:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:01,905 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-22 06:00:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:00:01,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 06:00:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:01,914 INFO L225 Difference]: With dead ends: 893 [2020-08-22 06:00:01,915 INFO L226 Difference]: Without dead ends: 890 [2020-08-22 06:00:01,916 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 [2020-08-22 06:00:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-22 06:00:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-22 06:00:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-22 06:00:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-22 06:00:02,011 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-22 06:00:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:02,012 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-22 06:00:02,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:00:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-22 06:00:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 06:00:02,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:02,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:00:02,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:00:02,016 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:02,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-22 06:00:02,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:02,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025327951] [2020-08-22 06:00:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,417 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:00:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:00:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 06:00:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:00:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:00:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:02,586 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 06:00:02,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025327951] [2020-08-22 06:00:02,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:00:02,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705930764] [2020-08-22 06:00:02,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:00:02,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:00:02,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:00:02,589 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-22 06:00:02,874 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 06:00:03,275 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 06:00:03,649 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189