/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=0.2 --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 04:21:55,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:21:55,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:21:55,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:21:55,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:21:55,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:21:55,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:21:55,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:21:55,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:21:55,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:21:55,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:21:55,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:21:55,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:21:55,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:21:55,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:21:55,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:21:55,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:21:55,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:21:55,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:21:55,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:21:55,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:21:55,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:21:55,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:21:55,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:21:55,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:21:55,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:21:55,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:21:55,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:21:55,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:21:55,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:21:55,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:21:55,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:21:55,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:21:55,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:21:55,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:21:55,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:21:55,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:21:55,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:21:55,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:21:55,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:21:55,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:21:55,484 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 04:21:55,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:21:55,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:21:55,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:21:55,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:21:55,507 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:21:55,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:21:55,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:21:55,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:21:55,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:21:55,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:21:55,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:21:55,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:21:55,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:21:55,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:21:55,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:21:55,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:21:55,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:21:55,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:21:55,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:21:55,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:21:55,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:21:55,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:21:55,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:21:55,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:21:55,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:21:55,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:21:55,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 04:21:55,511 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 04:21:55,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:21:55,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:21:55,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:21:55,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:21:55,799 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:21:55,800 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 04:21:55,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77074dde2/9275e111b5074d37af69873a09f65bb2/FLAG420bac7a1 [2020-08-22 04:21:56,666 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:21:56,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 04:21:56,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77074dde2/9275e111b5074d37af69873a09f65bb2/FLAG420bac7a1 [2020-08-22 04:21:57,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77074dde2/9275e111b5074d37af69873a09f65bb2 [2020-08-22 04:21:57,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:21:57,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:21:57,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:21:57,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:21:57,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:21:57,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:21:57" (1/1) ... [2020-08-22 04:21:57,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdbf8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:57, skipping insertion in model container [2020-08-22 04:21:57,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:21:57" (1/1) ... [2020-08-22 04:21:57,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:21:57,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:21:58,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:21:58,806 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:21:59,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:21:59,280 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:21:59,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59 WrapperNode [2020-08-22 04:21:59,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:21:59,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:21:59,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:21:59,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:21:59,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (1/1) ... [2020-08-22 04:21:59,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:21:59,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:21:59,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:21:59,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:21:59,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (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 04:21:59,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:21:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:21:59,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 04:21:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-22 04:21:59,600 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 04:21:59,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 04:21:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 04:21:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 04:21:59,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:21:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 04:21:59,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 04:21:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 04:21:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 04:21:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 04:21:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 04:21:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 04:21:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 04:21:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-22 04:21:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-22 04:21:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-22 04:21:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-22 04:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-22 04:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-22 04:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-22 04:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-22 04:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-22 04:21:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-22 04:21:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-22 04:21:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-22 04:21:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-22 04:21:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-22 04:21:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-22 04:21:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-22 04:21:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-22 04:21:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 04:21:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 04:21:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-22 04:21:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-22 04:21:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-22 04:21:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-22 04:21:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-22 04:21:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 04:21:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-22 04:21:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-22 04:21:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-22 04:21:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-22 04:21:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-22 04:21:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-22 04:21:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-22 04:21:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 04:21:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 04:21:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 04:21:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:21:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 04:21:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:21:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-22 04:21:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-22 04:21:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 04:21:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:21:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:21:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:21:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 04:21:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 04:21:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 04:21:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 04:21:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 04:21:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 04:21:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 04:21:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-22 04:21:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-22 04:21:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-22 04:21:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:21:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:21:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-22 04:21:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:21:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-22 04:21:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-22 04:21:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-22 04:21:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 04:21:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-22 04:21:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:21:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-22 04:21:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-22 04:21:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-22 04:21:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-22 04:21:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-22 04:21:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:21:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 04:21:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:22:00,652 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 04:22:01,249 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-22 04:22:01,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:22:01,757 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 04:22:01,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:01 BoogieIcfgContainer [2020-08-22 04:22:01,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:22:01,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:22:01,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:22:01,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:22:01,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:21:57" (1/3) ... [2020-08-22 04:22:01,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:01, skipping insertion in model container [2020-08-22 04:22:01,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:21:59" (2/3) ... [2020-08-22 04:22:01,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:01, skipping insertion in model container [2020-08-22 04:22:01,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:01" (3/3) ... [2020-08-22 04:22:01,773 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 04:22:01,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:22:01,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:22:01,804 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:22:01,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:22:01,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:22:01,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:22:01,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:22:01,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:22:01,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:22:01,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:22:01,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:22:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-22 04:22:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:22:01,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:01,870 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 04:22:01,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:01,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-22 04:22:01,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:01,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009788161] [2020-08-22 04:22:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,770 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 04:22:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:22:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:03,044 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 04:22:03,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009788161] [2020-08-22 04:22:03,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:22:03,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 04:22:03,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873960652] [2020-08-22 04:22:03,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:22:03,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:03,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:22:03,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:22:03,072 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-22 04:22:03,438 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:04,157 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 04:22:04,518 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-22 04:22:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:10,854 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-22 04:22:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:22:10,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-22 04:22:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:10,877 INFO L225 Difference]: With dead ends: 945 [2020-08-22 04:22:10,877 INFO L226 Difference]: Without dead ends: 492 [2020-08-22 04:22:10,888 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 04:22:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-22 04:22:11,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-22 04:22:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 04:22:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-22 04:22:11,035 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-22 04:22:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:11,035 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-22 04:22:11,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:22:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-22 04:22:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 04:22:11,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:11,040 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 04:22:11,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:22:11,041 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-22 04:22:11,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:11,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298604395] [2020-08-22 04:22:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,507 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:22:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:11,739 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 04:22:11,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298604395] [2020-08-22 04:22:11,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:11,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:11,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314201687] [2020-08-22 04:22:11,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:11,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:11,743 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-22 04:22:12,039 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:12,844 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:22:14,183 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:22:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:20,898 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-22 04:22:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:22:20,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-22 04:22:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:20,910 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 04:22:20,910 INFO L226 Difference]: Without dead ends: 893 [2020-08-22 04:22:20,913 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 04:22:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-22 04:22:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-22 04:22:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-22 04:22:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-22 04:22:21,030 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-22 04:22:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:21,031 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-22 04:22:21,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:22:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-22 04:22:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 04:22:21,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:21,034 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 04:22:21,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:22:21,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:21,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-22 04:22:21,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:21,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932778931] [2020-08-22 04:22:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,588 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:22:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:21,808 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 04:22:21,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932778931] [2020-08-22 04:22:21,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:21,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:21,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250599373] [2020-08-22 04:22:21,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:21,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:21,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:21,811 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-22 04:22:22,093 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:22,495 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 04:22:22,849 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:22:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:28,761 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-22 04:22:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:22:28,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-22 04:22:28,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:28,769 INFO L225 Difference]: With dead ends: 895 [2020-08-22 04:22:28,770 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 04:22:28,771 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 04:22:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 04:22:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-22 04:22:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-22 04:22:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-22 04:22:28,874 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-22 04:22:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:28,875 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-22 04:22:28,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:22:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-22 04:22:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 04:22:28,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:28,878 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 04:22:28,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:22:28,878 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:28,879 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-22 04:22:28,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:28,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224705903] [2020-08-22 04:22:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,265 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:22:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:29,423 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 04:22:29,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224705903] [2020-08-22 04:22:29,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:29,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:29,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462367448] [2020-08-22 04:22:29,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:29,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:29,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:29,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:29,425 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-22 04:22:29,695 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:30,083 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 04:22:30,413 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:22:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:36,240 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-22 04:22:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:22:36,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 04:22:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:36,250 INFO L225 Difference]: With dead ends: 894 [2020-08-22 04:22:36,250 INFO L226 Difference]: Without dead ends: 891 [2020-08-22 04:22:36,252 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 04:22:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-22 04:22:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-22 04:22:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-22 04:22:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-22 04:22:36,376 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-22 04:22:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:36,377 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-22 04:22:36,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:22:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-22 04:22:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 04:22:36,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:36,380 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 04:22:36,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:22:36,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-22 04:22:36,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:36,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865367108] [2020-08-22 04:22:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,807 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:22:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:37,024 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 04:22:37,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865367108] [2020-08-22 04:22:37,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:37,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:37,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357042390] [2020-08-22 04:22:37,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:37,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:37,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:37,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:37,029 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-22 04:22:37,319 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:37,713 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:22:38,054 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:22:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:43,730 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-22 04:22:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:22:43,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 04:22:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:43,738 INFO L225 Difference]: With dead ends: 893 [2020-08-22 04:22:43,738 INFO L226 Difference]: Without dead ends: 890 [2020-08-22 04:22:43,739 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 04:22:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-22 04:22:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-22 04:22:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-22 04:22:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-22 04:22:43,837 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-22 04:22:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:43,838 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-22 04:22:43,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:22:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-22 04:22:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 04:22:43,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:43,840 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 04:22:43,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:22:43,840 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:43,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-22 04:22:43,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:43,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102470336] [2020-08-22 04:22:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,261 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:22:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:44,389 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 04:22:44,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102470336] [2020-08-22 04:22:44,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:44,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:44,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562292387] [2020-08-22 04:22:44,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:44,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:44,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:44,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:44,392 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-22 04:22:44,689 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:45,076 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:22:45,424 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:22:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:52,042 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-22 04:22:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:22:52,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 04:22:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:52,056 INFO L225 Difference]: With dead ends: 892 [2020-08-22 04:22:52,056 INFO L226 Difference]: Without dead ends: 889 [2020-08-22 04:22:52,058 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 04:22:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-22 04:22:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-22 04:22:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-22 04:22:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-22 04:22:52,167 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-22 04:22:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:52,168 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-22 04:22:52,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:22:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-22 04:22:52,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 04:22:52,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:52,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:22:52,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:22:52,173 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-22 04:22:52,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:52,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900939294] [2020-08-22 04:22:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,618 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:22:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:22:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:22:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:22:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:22:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:52,757 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 04:22:52,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900939294] [2020-08-22 04:22:52,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:52,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:22:52,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153767571] [2020-08-22 04:22:52,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:22:52,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:52,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:22:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:22:52,759 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-22 04:22:53,105 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:22:53,495 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:22:53,820 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189