/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 [2020-08-19 07:19:36,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 07:19:36,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 07:19:36,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 07:19:36,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 07:19:36,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 07:19:36,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 07:19:36,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 07:19:36,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 07:19:36,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 07:19:36,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 07:19:36,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 07:19:36,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 07:19:36,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 07:19:36,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 07:19:36,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 07:19:36,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 07:19:36,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 07:19:36,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 07:19:36,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 07:19:36,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 07:19:36,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 07:19:36,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 07:19:36,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 07:19:36,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 07:19:36,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 07:19:36,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 07:19:36,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 07:19:36,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 07:19:36,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 07:19:36,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 07:19:36,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 07:19:36,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 07:19:36,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 07:19:36,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 07:19:36,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 07:19:36,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 07:19:36,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 07:19:36,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 07:19:36,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 07:19:36,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 07:19:36,871 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 [2020-08-19 07:19:36,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 07:19:36,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 07:19:36,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 07:19:36,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 07:19:36,918 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 07:19:36,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 07:19:36,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 07:19:36,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 07:19:36,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 07:19:36,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 07:19:36,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 07:19:36,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 07:19:36,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 07:19:36,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 07:19:36,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 07:19:36,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 07:19:36,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 07:19:36,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 07:19:36,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 07:19:36,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 07:19:36,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 07:19:36,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 07:19:36,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 07:19:36,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 07:19:36,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 07:19:36,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 07:19:36,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 07:19:36,923 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 07:19:37,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 07:19:37,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 07:19:37,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 07:19:37,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 07:19:37,231 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 07:19:37,232 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 07:19:37,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09108001/b745ca039a364470b07bd423bd508869/FLAG7f6ea79b3 [2020-08-19 07:19:38,076 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 07:19:38,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 07:19:38,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09108001/b745ca039a364470b07bd423bd508869/FLAG7f6ea79b3 [2020-08-19 07:19:38,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09108001/b745ca039a364470b07bd423bd508869 [2020-08-19 07:19:38,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 07:19:38,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 07:19:38,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 07:19:38,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 07:19:38,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 07:19:38,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 07:19:38" (1/1) ... [2020-08-19 07:19:38,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234e7026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:38, skipping insertion in model container [2020-08-19 07:19:38,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 07:19:38" (1/1) ... [2020-08-19 07:19:38,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 07:19:38,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 07:19:40,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 07:19:40,058 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 07:19:40,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 07:19:40,315 INFO L208 MainTranslator]: Completed translation [2020-08-19 07:19:40,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40 WrapperNode [2020-08-19 07:19:40,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 07:19:40,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 07:19:40,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 07:19:40,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 07:19:40,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (1/1) ... [2020-08-19 07:19:40,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 07:19:40,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 07:19:40,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 07:19:40,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 07:19:40,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (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 [2020-08-19 07:19:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 07:19:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 07:19:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 07:19:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-19 07:19:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 07:19:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-19 07:19:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-19 07:19:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 07:19:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 07:19:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 07:19:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 07:19:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 07:19:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 07:19:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 07:19:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 07:19:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 07:19:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 07:19:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-19 07:19:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-19 07:19:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-19 07:19:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-19 07:19:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-19 07:19:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-19 07:19:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-19 07:19:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-19 07:19:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-19 07:19:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-19 07:19:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-19 07:19:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-19 07:19:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-19 07:19:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-19 07:19:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-19 07:19:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 07:19:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-19 07:19:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 07:19:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-19 07:19:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-19 07:19:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-19 07:19:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-19 07:19:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-19 07:19:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-19 07:19:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-19 07:19:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-19 07:19:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-19 07:19:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-19 07:19:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-19 07:19:40,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-19 07:19:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 07:19:40,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-19 07:19:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-19 07:19:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-19 07:19:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-19 07:19:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-19 07:19:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 07:19:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 07:19:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 07:19:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 07:19:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 07:19:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 07:19:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 07:19:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-19 07:19:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-19 07:19:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 07:19:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-19 07:19:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 07:19:40,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 07:19:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-19 07:19:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-19 07:19:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 07:19:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 07:19:40,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 07:19:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 07:19:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-19 07:19:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-19 07:19:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-19 07:19:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 07:19:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-19 07:19:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-19 07:19:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-19 07:19:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-19 07:19:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-19 07:19:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-19 07:19:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-19 07:19:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-19 07:19:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-19 07:19:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-19 07:19:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 07:19:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 07:19:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 07:19:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-19 07:19:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 07:19:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-19 07:19:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-19 07:19:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-19 07:19:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-19 07:19:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-19 07:19:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-19 07:19:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-19 07:19:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 07:19:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 07:19:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 07:19:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-19 07:19:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 07:19:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-19 07:19:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-19 07:19:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-19 07:19:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-19 07:19:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-19 07:19:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-19 07:19:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-19 07:19:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-19 07:19:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 07:19:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-19 07:19:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-19 07:19:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-19 07:19:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-19 07:19:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-19 07:19:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-19 07:19:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 07:19:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 07:19:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 07:19:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 07:19:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 07:19:40,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 07:19:41,770 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 07:19:42,423 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-19 07:19:42,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 07:19:42,945 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 07:19:42,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 07:19:42 BoogieIcfgContainer [2020-08-19 07:19:42,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 07:19:42,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 07:19:42,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 07:19:42,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 07:19:42,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 07:19:38" (1/3) ... [2020-08-19 07:19:42,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21297878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 07:19:42, skipping insertion in model container [2020-08-19 07:19:42,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 07:19:40" (2/3) ... [2020-08-19 07:19:42,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21297878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 07:19:42, skipping insertion in model container [2020-08-19 07:19:42,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 07:19:42" (3/3) ... [2020-08-19 07:19:42,961 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 [2020-08-19 07:19:42,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 07:19:42,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 07:19:42,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 07:19:43,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 07:19:43,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 07:19:43,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 07:19:43,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 07:19:43,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 07:19:43,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 07:19:43,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 07:19:43,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 07:19:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-19 07:19:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 07:19:43,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:19:43,076 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] [2020-08-19 07:19:43,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:19:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:19:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-19 07:19:43,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:19:43,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668811672] [2020-08-19 07:19:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:19:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,102 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:19:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:19:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:19:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:19:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:19:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:19:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 07:19:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 07:19:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:19:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 07:19:44,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668811672] [2020-08-19 07:19:44,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 07:19:44,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 07:19:44,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346387409] [2020-08-19 07:19:44,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 07:19:44,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:19:44,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 07:19:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 07:19:44,336 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-19 07:19:44,703 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:19:45,512 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 07:19:45,859 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-19 07:19:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:19:54,672 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-19 07:19:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:19:54,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-19 07:19:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:19:54,695 INFO L225 Difference]: With dead ends: 945 [2020-08-19 07:19:54,695 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 07:19:54,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:19:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 07:19:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-19 07:19:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 07:19:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-19 07:19:54,915 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-19 07:19:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:19:54,916 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-19 07:19:54,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 07:19:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-19 07:19:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 07:19:54,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:19:54,928 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] [2020-08-19 07:19:54,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 07:19:54,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:19:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:19:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-19 07:19:54,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:19:54,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9553520] [2020-08-19 07:19:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:19:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,339 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:19:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:19:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:19:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:19:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:19:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:19:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 07:19:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 07:19:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:19:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:19:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:19:55,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9553520] [2020-08-19 07:19:55,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:19:55,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:19:55,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760462624] [2020-08-19 07:19:55,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:19:55,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:19:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:19:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:19:55,521 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-19 07:19:55,806 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:19:56,666 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 07:19:57,965 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 07:20:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:07,388 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-19 07:20:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 07:20:07,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-19 07:20:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:07,400 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 07:20:07,400 INFO L226 Difference]: Without dead ends: 893 [2020-08-19 07:20:07,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:20:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-19 07:20:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-19 07:20:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-19 07:20:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-19 07:20:07,523 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-19 07:20:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:07,524 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-19 07:20:07,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-19 07:20:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 07:20:07,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:07,527 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] [2020-08-19 07:20:07,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 07:20:07,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:07,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-19 07:20:07,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:07,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593275470] [2020-08-19 07:20:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:07,932 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:20:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:20:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 07:20:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:08,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593275470] [2020-08-19 07:20:08,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:08,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:08,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128015822] [2020-08-19 07:20:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:08,108 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-19 07:20:08,375 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:20:08,762 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 07:20:09,149 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 07:20:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:16,639 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-19 07:20:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:20:16,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-19 07:20:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:16,652 INFO L225 Difference]: With dead ends: 895 [2020-08-19 07:20:16,652 INFO L226 Difference]: Without dead ends: 892 [2020-08-19 07:20:16,653 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 [2020-08-19 07:20:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-19 07:20:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-19 07:20:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-19 07:20:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-19 07:20:16,783 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-19 07:20:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:16,786 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-19 07:20:16,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-19 07:20:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 07:20:16,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:16,791 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] [2020-08-19 07:20:16,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 07:20:16,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-19 07:20:16,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:16,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656472071] [2020-08-19 07:20:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,346 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:20:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:20:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 07:20:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:17,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656472071] [2020-08-19 07:20:17,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:17,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:17,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233553614] [2020-08-19 07:20:17,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:17,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:17,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:17,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:17,545 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-19 07:20:17,836 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:20:18,288 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 07:20:18,625 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 07:20:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:26,311 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-19 07:20:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:20:26,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 07:20:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:26,319 INFO L225 Difference]: With dead ends: 894 [2020-08-19 07:20:26,319 INFO L226 Difference]: Without dead ends: 891 [2020-08-19 07:20:26,320 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 [2020-08-19 07:20:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-19 07:20:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-19 07:20:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 07:20:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-19 07:20:26,399 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-19 07:20:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:26,400 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-19 07:20:26,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-19 07:20:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 07:20:26,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:26,401 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] [2020-08-19 07:20:26,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 07:20:26,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-19 07:20:26,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:26,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444825430] [2020-08-19 07:20:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,764 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:20:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:20:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 07:20:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:26,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444825430] [2020-08-19 07:20:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376880793] [2020-08-19 07:20:26,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:26,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:26,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:26,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:26,912 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-19 07:20:27,213 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:20:27,581 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 07:20:27,899 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 07:20:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 07:20:33,800 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-19 07:20:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 07:20:33,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 07:20:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 07:20:33,817 INFO L225 Difference]: With dead ends: 893 [2020-08-19 07:20:33,817 INFO L226 Difference]: Without dead ends: 890 [2020-08-19 07:20:33,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 07:20:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-19 07:20:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-19 07:20:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 07:20:33,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-19 07:20:33,904 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-19 07:20:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 07:20:33,904 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-19 07:20:33,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 07:20:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-19 07:20:33,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 07:20:33,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 07:20:33,906 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] [2020-08-19 07:20:33,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 07:20:33,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 07:20:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 07:20:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-19 07:20:33,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 07:20:33,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361680859] [2020-08-19 07:20:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 07:20:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,312 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 07:20:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 07:20:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 07:20:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 07:20:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 07:20:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 07:20:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 07:20:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 07:20:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 07:20:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 07:20:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 07:20:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361680859] [2020-08-19 07:20:34,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 07:20:34,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 07:20:34,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556368470] [2020-08-19 07:20:34,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 07:20:34,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 07:20:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 07:20:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 07:20:34,448 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-19 07:20:34,739 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 07:20:35,149 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 07:20:35,478 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189