/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 -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 11:50:59,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:50:59,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:50:59,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:50:59,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:50:59,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:50:59,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:50:59,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:50:59,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:50:59,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:50:59,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:50:59,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:50:59,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:50:59,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:50:59,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:50:59,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:50:59,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:50:59,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:50:59,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:50:59,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:50:59,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:50:59,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:50:59,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:50:59,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:50:59,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:50:59,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:50:59,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:50:59,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:50:59,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:50:59,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:50:59,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:50:59,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:50:59,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:50:59,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:50:59,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:50:59,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:50:59,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:50:59,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:50:59,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:50:59,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:50:59,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:50:59,160 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 11:50:59,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:50:59,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:50:59,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:50:59,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:50:59,214 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:50:59,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:50:59,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:50:59,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:50:59,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:50:59,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:50:59,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:50:59,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:50:59,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:50:59,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:50:59,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:50:59,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:50:59,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:50:59,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:50:59,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:50:59,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:50:59,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:50:59,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:50:59,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:50:59,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:50:59,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:50:59,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:50:59,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:50:59,219 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 [2020-08-18 11:50:59,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:50:59,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:50:59,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:50:59,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:50:59,529 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:50:59,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 11:50:59,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bba9fddc5/a5665be9c956414398312399d5eedce6/FLAG85fc05221 [2020-08-18 11:51:00,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:51:00,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 11:51:00,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bba9fddc5/a5665be9c956414398312399d5eedce6/FLAG85fc05221 [2020-08-18 11:51:01,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bba9fddc5/a5665be9c956414398312399d5eedce6 [2020-08-18 11:51:01,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:51:01,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:51:01,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:01,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:51:01,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:51:01,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:01" (1/1) ... [2020-08-18 11:51:01,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:01, skipping insertion in model container [2020-08-18 11:51:01,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:51:01" (1/1) ... [2020-08-18 11:51:01,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:51:01,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:51:02,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:02,657 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:51:02,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:51:03,066 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:51:03,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03 WrapperNode [2020-08-18 11:51:03,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:51:03,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:51:03,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:51:03,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:51:03,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (1/1) ... [2020-08-18 11:51:03,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:51:03,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:51:03,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:51:03,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:51:03,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (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 11:51:03,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 11:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 11:51:03,428 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 11:51:03,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 11:51:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 11:51:03,430 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 11:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:51:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:51:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 11:51:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 11:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 11:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 11:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 11:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 11:51:03,436 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 11:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 11:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 11:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 11:51:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 11:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 11:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 11:51:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 11:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 11:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 11:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 11:51:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 11:51:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 11:51:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 11:51:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 11:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 11:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 11:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:51:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 11:51:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 11:51:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 11:51:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 11:51:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 11:51:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 11:51:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 11:51:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 11:51:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 11:51:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 11:51:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 11:51:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 11:51:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:51:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 11:51:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:51:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 11:51:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 11:51:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:51:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:51:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:51:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:51:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 11:51:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 11:51:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 11:51:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 11:51:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 11:51:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 11:51:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 11:51:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 11:51:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 11:51:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 11:51:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 11:51:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 11:51:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 11:51:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 11:51:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 11:51:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 11:51:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 11:51:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 11:51:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 11:51:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 11:51:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:51:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 11:51:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:51:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 11:51:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:51:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 11:51:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 11:51:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 11:51:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 11:51:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:51:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:51:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:51:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 11:51:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:51:04,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:51:04,764 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 11:51:05,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:51:05,361 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 11:51:05,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:05 BoogieIcfgContainer [2020-08-18 11:51:05,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:51:05,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:51:05,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:51:05,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:51:05,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:51:01" (1/3) ... [2020-08-18 11:51:05,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120f6295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:05, skipping insertion in model container [2020-08-18 11:51:05,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:51:03" (2/3) ... [2020-08-18 11:51:05,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120f6295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:51:05, skipping insertion in model container [2020-08-18 11:51:05,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:51:05" (3/3) ... [2020-08-18 11:51:05,379 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 11:51:05,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:51:05,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:51:05,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:51:05,455 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:51:05,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:51:05,455 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:51:05,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:51:05,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:51:05,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:51:05,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:51:05,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:51:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 11:51:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:51:05,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:05,507 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 11:51:05,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 11:51:05,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:05,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294928432] [2020-08-18 11:51:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,513 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 11:51:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:51:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:06,787 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 11:51:06,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294928432] [2020-08-18 11:51:06,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:51:06,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 11:51:06,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364835980] [2020-08-18 11:51:06,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:51:06,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:06,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:51:06,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:51:06,820 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 11:51:07,133 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:07,772 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:51:08,066 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 11:51:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:14,129 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 11:51:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:51:14,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 11:51:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:14,152 INFO L225 Difference]: With dead ends: 945 [2020-08-18 11:51:14,153 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 11:51:14,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 11:51:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 11:51:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 11:51:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 11:51:14,356 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 11:51:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:14,357 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 11:51:14,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:51:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 11:51:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 11:51:14,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:14,368 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 11:51:14,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:51:14,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 11:51:14,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:14,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044103817] [2020-08-18 11:51:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,801 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:51:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:14,967 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 11:51:14,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044103817] [2020-08-18 11:51:14,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:14,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:14,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705992273] [2020-08-18 11:51:14,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:14,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:14,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:14,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:14,972 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 11:51:15,203 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:15,887 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:51:17,063 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:51:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:26,204 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 11:51:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:51:26,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 11:51:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:26,215 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 11:51:26,215 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 11:51:26,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 11:51:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 11:51:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 11:51:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 11:51:26,329 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 11:51:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:26,329 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 11:51:26,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:51:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 11:51:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 11:51:26,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:26,332 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 11:51:26,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:51:26,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:26,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 11:51:26,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:26,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160096198] [2020-08-18 11:51:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,670 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:51:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:26,880 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 11:51:26,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160096198] [2020-08-18 11:51:26,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:26,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:26,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439503509] [2020-08-18 11:51:26,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:26,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:26,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:26,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:26,882 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 11:51:27,085 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:27,504 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:51:27,810 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:51:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:32,280 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 11:51:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:51:32,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 11:51:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:32,288 INFO L225 Difference]: With dead ends: 895 [2020-08-18 11:51:32,288 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 11:51:32,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 11:51:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 11:51:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 11:51:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 11:51:32,385 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 11:51:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:32,385 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 11:51:32,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:51:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 11:51:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 11:51:32,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:32,388 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 11:51:32,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:51:32,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 11:51:32,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:32,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623087390] [2020-08-18 11:51:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,714 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:51:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:32,924 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 11:51:32,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623087390] [2020-08-18 11:51:32,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:32,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:32,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401377764] [2020-08-18 11:51:32,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:32,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:32,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:32,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:32,929 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 11:51:33,176 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:33,520 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 11:51:33,798 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:51:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:39,429 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 11:51:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:51:39,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 11:51:39,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:39,436 INFO L225 Difference]: With dead ends: 894 [2020-08-18 11:51:39,437 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 11:51:39,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 11:51:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 11:51:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 11:51:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 11:51:39,525 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 11:51:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:39,525 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 11:51:39,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:51:39,525 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 11:51:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 11:51:39,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:39,527 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, 1] [2020-08-18 11:51:39,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:51:39,528 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:39,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 11:51:39,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:39,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246776045] [2020-08-18 11:51:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,821 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:51:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:39,999 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 11:51:40,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246776045] [2020-08-18 11:51:40,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:40,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:40,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246899679] [2020-08-18 11:51:40,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:40,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:40,005 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 11:51:40,198 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:40,494 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:51:40,759 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:51:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:48,519 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 11:51:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:51:48,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 11:51:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:48,527 INFO L225 Difference]: With dead ends: 893 [2020-08-18 11:51:48,527 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 11:51:48,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 11:51:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 11:51:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 11:51:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 11:51:48,620 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 11:51:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:48,620 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 11:51:48,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:51:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 11:51:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 11:51:48,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:48,624 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 11:51:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:51:48,624 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 11:51:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008463717] [2020-08-18 11:51:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:48,965 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:51:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:49,105 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 11:51:49,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008463717] [2020-08-18 11:51:49,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:49,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:49,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290328543] [2020-08-18 11:51:49,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:49,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:49,108 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 11:51:49,380 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:49,714 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:51:50,010 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:51:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:51:55,309 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-18 11:51:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:51:55,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 11:51:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:51:55,318 INFO L225 Difference]: With dead ends: 892 [2020-08-18 11:51:55,318 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 11:51:55,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:51:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 11:51:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-18 11:51:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-18 11:51:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-18 11:51:55,414 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-18 11:51:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:51:55,415 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-18 11:51:55,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:51:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-18 11:51:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 11:51:55,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:51:55,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:51:55,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:51:55,417 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:51:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:51:55,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-18 11:51:55,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:51:55,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189274014] [2020-08-18 11:51:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:51:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,730 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:51:55,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:51:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:51:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:51:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:51:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:51:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:51:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:51:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:51:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:51:55,861 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 11:51:55,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189274014] [2020-08-18 11:51:55,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:51:55,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:51:55,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000114586] [2020-08-18 11:51:55,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:51:55,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:51:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:51:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:51:55,863 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-18 11:51:56,100 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 11:51:56,439 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 11:51:56,739 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189