/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=LOWLEXORDER --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 [2020-08-21 18:39:25,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:39:25,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:39:25,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:39:25,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:39:25,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:39:25,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:39:25,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:39:25,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:39:25,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:39:25,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:39:25,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:39:25,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:39:25,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:39:25,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:39:25,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:39:25,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:39:25,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:39:25,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:39:25,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:39:25,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:39:25,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:39:25,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:39:25,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:39:25,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:39:25,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:39:25,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:39:25,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:39:25,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:39:25,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:39:25,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:39:25,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:39:25,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:39:25,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:39:25,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:39:25,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:39:25,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:39:25,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:39:25,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:39:25,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:39:25,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:39:25,187 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 [2020-08-21 18:39:25,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:39:25,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:39:25,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:39:25,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:39:25,237 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:39:25,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:39:25,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:39:25,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:39:25,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:39:25,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:39:25,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:39:25,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:39:25,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:39:25,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:39:25,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:39:25,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:39:25,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:39:25,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:39:25,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:39:25,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:39:25,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:39:25,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:39:25,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:39:25,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:39:25,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:39:25,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:39:25,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 18:39:25,243 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:39:25,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:39:25,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:39:25,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:39:25,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:39:25,548 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:39:25,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-21 18:39:25,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0064ae3/570438524b214f73a541bb1b71127505/FLAGc40ce4d8f [2020-08-21 18:39:26,392 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:39:26,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-21 18:39:26,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0064ae3/570438524b214f73a541bb1b71127505/FLAGc40ce4d8f [2020-08-21 18:39:26,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0064ae3/570438524b214f73a541bb1b71127505 [2020-08-21 18:39:26,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:39:26,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:39:26,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:39:26,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:39:26,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:39:26,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:39:26" (1/1) ... [2020-08-21 18:39:26,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256b9fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:26, skipping insertion in model container [2020-08-21 18:39:26,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:39:26" (1/1) ... [2020-08-21 18:39:26,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:39:27,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:39:28,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:39:28,440 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:39:28,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:39:28,967 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:39:28,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28 WrapperNode [2020-08-21 18:39:28,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:39:28,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:39:28,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:39:28,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:39:28,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:28,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (1/1) ... [2020-08-21 18:39:29,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:39:29,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:39:29,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:39:29,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:39:29,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (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 [2020-08-21 18:39:29,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:39:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:39:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 18:39:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-21 18:39:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 18:39:29,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 18:39:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 18:39:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 18:39:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:39:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 18:39:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 18:39:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 18:39:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 18:39:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 18:39:29,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 18:39:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 18:39:29,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 18:39:29,296 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-21 18:39:29,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-21 18:39:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-21 18:39:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-21 18:39:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-21 18:39:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-21 18:39:29,297 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-21 18:39:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-21 18:39:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-21 18:39:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-21 18:39:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-21 18:39:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-21 18:39:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-21 18:39:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-21 18:39:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-21 18:39:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-21 18:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-21 18:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-21 18:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-21 18:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-21 18:39:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-21 18:39:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-21 18:39:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-21 18:39:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-21 18:39:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-21 18:39:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-21 18:39:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-21 18:39:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 18:39:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 18:39:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-21 18:39:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-21 18:39:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-21 18:39:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 18:39:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-21 18:39:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 18:39:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-21 18:39:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-21 18:39:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-21 18:39:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-21 18:39:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-21 18:39:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-21 18:39:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-21 18:39:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-21 18:39:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-21 18:39:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-21 18:39:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-21 18:39:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-21 18:39:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 18:39:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 18:39:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 18:39:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:39:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-21 18:39:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 18:39:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 18:39:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:39:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-21 18:39:29,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-21 18:39:29,410 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-21 18:39:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 18:39:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-21 18:39:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-21 18:39:29,411 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-21 18:39:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-21 18:39:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-21 18:39:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-21 18:39:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-21 18:39:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-21 18:39:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-21 18:39:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-21 18:39:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:39:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:39:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:39:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-21 18:39:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:39:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-21 18:39:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-21 18:39:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-21 18:39:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-21 18:39:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-21 18:39:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-21 18:39:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-21 18:39:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-21 18:39:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-21 18:39:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-21 18:39:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-21 18:39:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-21 18:39:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-21 18:39:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-21 18:39:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 18:39:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:39:30,342 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 18:39:30,877 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-21 18:39:31,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:39:31,348 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:39:31,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:39:31 BoogieIcfgContainer [2020-08-21 18:39:31,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:39:31,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:39:31,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:39:31,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:39:31,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:39:26" (1/3) ... [2020-08-21 18:39:31,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ba469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:39:31, skipping insertion in model container [2020-08-21 18:39:31,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:39:28" (2/3) ... [2020-08-21 18:39:31,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ba469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:39:31, skipping insertion in model container [2020-08-21 18:39:31,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:39:31" (3/3) ... [2020-08-21 18:39:31,367 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 [2020-08-21 18:39:31,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:39:31,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:39:31,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:39:31,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:39:31,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:39:31,439 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:39:31,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:39:31,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:39:31,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:39:31,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:39:31,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:39:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-21 18:39:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:39:31,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:39:31,484 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] [2020-08-21 18:39:31,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:39:31,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:39:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-21 18:39:31,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:39:31,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650303994] [2020-08-21 18:39:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:39:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,246 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:39:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:39:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:39:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:39:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:39:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 18:39:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:39:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 18:39:32,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650303994] [2020-08-21 18:39:32,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:39:32,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 18:39:32,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806579767] [2020-08-21 18:39:32,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:39:32,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:39:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:39:32,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:39:32,499 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-21 18:39:32,776 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:39:33,395 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 18:39:33,659 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-21 18:39:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:39:38,486 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-21 18:39:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:39:38,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-21 18:39:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:39:38,508 INFO L225 Difference]: With dead ends: 945 [2020-08-21 18:39:38,508 INFO L226 Difference]: Without dead ends: 492 [2020-08-21 18:39:38,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:39:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-21 18:39:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-21 18:39:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-21 18:39:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-21 18:39:38,662 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-21 18:39:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:39:38,663 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-21 18:39:38,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:39:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-21 18:39:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 18:39:38,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:39:38,668 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] [2020-08-21 18:39:38,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:39:38,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:39:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:39:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-21 18:39:38,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:39:38,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653187150] [2020-08-21 18:39:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:39:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,025 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:39:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:39:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:39:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:39:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:39:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:39:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:39:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:39:39,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653187150] [2020-08-21 18:39:39,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:39:39,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:39:39,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593002582] [2020-08-21 18:39:39,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:39:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:39:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:39:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:39:39,199 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-21 18:39:39,448 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:39:40,098 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 18:39:41,293 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:39:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:39:47,944 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-21 18:39:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:39:47,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-21 18:39:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:39:47,955 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 18:39:47,955 INFO L226 Difference]: Without dead ends: 893 [2020-08-21 18:39:47,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:39:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-21 18:39:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-21 18:39:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-21 18:39:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-21 18:39:48,076 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-21 18:39:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:39:48,077 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-21 18:39:48,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:39:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-21 18:39:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 18:39:48,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:39:48,080 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] [2020-08-21 18:39:48,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:39:48,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:39:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:39:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-21 18:39:48,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:39:48,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98352143] [2020-08-21 18:39:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:39:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,455 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:39:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:39:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:39:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:39:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:39:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:39:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:39:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:39:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:39:48,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98352143] [2020-08-21 18:39:48,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:39:48,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:39:48,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235224375] [2020-08-21 18:39:48,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:39:48,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:39:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:39:48,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:39:48,690 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-21 18:39:48,954 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:39:49,251 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 18:39:49,517 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:39:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:39:53,477 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-21 18:39:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:39:53,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-21 18:39:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:39:53,485 INFO L225 Difference]: With dead ends: 895 [2020-08-21 18:39:53,485 INFO L226 Difference]: Without dead ends: 892 [2020-08-21 18:39:53,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:39:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-21 18:39:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-21 18:39:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-21 18:39:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-21 18:39:53,595 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-21 18:39:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:39:53,598 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-21 18:39:53,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:39:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-21 18:39:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:39:53,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:39:53,604 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] [2020-08-21 18:39:53,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:39:53,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:39:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:39:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-21 18:39:53,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:39:53,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244417761] [2020-08-21 18:39:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:39:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,009 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:39:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:39:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:39:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:39:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:39:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:39:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:39:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:39:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:39:54,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244417761] [2020-08-21 18:39:54,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:39:54,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:39:54,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746734727] [2020-08-21 18:39:54,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:39:54,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:39:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:39:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:39:54,188 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-21 18:39:54,407 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:39:54,714 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 18:39:54,984 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:39:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:39:59,520 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-21 18:39:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:39:59,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 18:39:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:39:59,527 INFO L225 Difference]: With dead ends: 894 [2020-08-21 18:39:59,527 INFO L226 Difference]: Without dead ends: 891 [2020-08-21 18:39:59,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:39:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-21 18:39:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-21 18:39:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 18:39:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-21 18:39:59,614 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-21 18:39:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:39:59,614 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-21 18:39:59,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:39:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-21 18:39:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:39:59,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:39:59,616 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] [2020-08-21 18:39:59,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:39:59,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:39:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:39:59,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-21 18:39:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:39:59,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975885541] [2020-08-21 18:39:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:39:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:59,924 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:39:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:39:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:39:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:39:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:39:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:40:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:40:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:40:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:40:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:40:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:40:00,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975885541] [2020-08-21 18:40:00,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:40:00,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:40:00,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512929630] [2020-08-21 18:40:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:40:00,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:40:00,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:40:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:40:00,099 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-21 18:40:00,333 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:40:00,649 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 18:40:00,932 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:40:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:40:06,446 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-21 18:40:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:40:06,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 18:40:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:40:06,453 INFO L225 Difference]: With dead ends: 893 [2020-08-21 18:40:06,453 INFO L226 Difference]: Without dead ends: 890 [2020-08-21 18:40:06,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:40:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-21 18:40:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-21 18:40:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-21 18:40:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-21 18:40:06,549 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-21 18:40:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:40:06,549 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-21 18:40:06,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:40:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-21 18:40:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 18:40:06,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:40:06,551 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] [2020-08-21 18:40:06,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:40:06,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:40:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:40:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-21 18:40:06,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:40:06,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253196954] [2020-08-21 18:40:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:40:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,855 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:40:06,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:40:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:40:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:40:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:40:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:40:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:40:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:40:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:40:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:40:07,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253196954] [2020-08-21 18:40:07,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:40:07,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:40:07,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116116155] [2020-08-21 18:40:07,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:40:07,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:40:07,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:40:07,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:40:07,034 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-21 18:40:07,271 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:40:07,640 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 18:40:07,915 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:40:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:40:12,540 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-21 18:40:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:40:12,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 18:40:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:40:12,549 INFO L225 Difference]: With dead ends: 892 [2020-08-21 18:40:12,549 INFO L226 Difference]: Without dead ends: 889 [2020-08-21 18:40:12,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:40:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-21 18:40:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-21 18:40:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-21 18:40:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-21 18:40:12,668 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-21 18:40:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:40:12,668 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-21 18:40:12,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:40:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-21 18:40:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 18:40:12,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:40:12,670 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] [2020-08-21 18:40:12,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:40:12,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:40:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:40:12,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-21 18:40:12,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:40:12,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328342159] [2020-08-21 18:40:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:40:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,000 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:40:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:40:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:40:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:40:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:40:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:40:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:40:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:40:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:40:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:40:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 18:40:13,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328342159] [2020-08-21 18:40:13,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:40:13,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:40:13,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060773652] [2020-08-21 18:40:13,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:40:13,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:40:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:40:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:40:13,146 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-21 18:40:13,364 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 18:40:13,686 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 18:40:13,971 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:40:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:40:19,076 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-21 18:40:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:40:19,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-21 18:40:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:40:19,078 INFO L225 Difference]: With dead ends: 889 [2020-08-21 18:40:19,078 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:40:19,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:40:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:40:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:40:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:40:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:40:19,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-21 18:40:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:40:19,084 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:40:19,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:40:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:40:19,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:40:19,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:40:19,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:40:19,620 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-21 18:40:19,774 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-21 18:40:24,262 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 18:40:24,500 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 39 [2020-08-21 18:40:24,947 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-21 18:40:25,451 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-21 18:40:25,919 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 18:40:26,298 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2020-08-21 18:40:26,739 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 33 [2020-08-21 18:40:27,156 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-21 18:40:27,363 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1