/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:01:43,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:01:43,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:01:43,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:01:43,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:01:43,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:01:43,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:01:43,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:01:43,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:01:43,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:01:43,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:01:43,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:01:43,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:01:43,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:01:43,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:01:43,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:01:43,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:01:43,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:01:43,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:01:43,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:01:43,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:01:43,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:01:43,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:01:43,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:01:43,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:01:43,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:01:43,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:01:43,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:01:43,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:01:43,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:01:43,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:01:43,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:01:43,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:01:43,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:01:43,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:01:43,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:01:43,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:01:43,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:01:43,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:01:43,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:01:43,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:01:43,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:01:43,097 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:01:43,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:01:43,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:01:43,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:01:43,099 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:01:43,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:01:43,099 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:01:43,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:01:43,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:01:43,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:01:43,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:01:43,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:01:43,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:01:43,101 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:01:43,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:01:43,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:01:43,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:01:43,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:01:43,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:01:43,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:01:43,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:01:43,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:01:43,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:01:43,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:01:43,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:01:43,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:01:43,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:01:43,417 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:01:43,417 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:01:43,418 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-11-06 21:01:43,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc760b8/e39c3b2466524b36be6293f394c94f65/FLAG0da170dee [2019-11-06 21:01:44,221 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:01:44,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-11-06 21:01:44,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc760b8/e39c3b2466524b36be6293f394c94f65/FLAG0da170dee [2019-11-06 21:01:44,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc760b8/e39c3b2466524b36be6293f394c94f65 [2019-11-06 21:01:44,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:01:44,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:01:44,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:01:44,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:01:44,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:01:44,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:44" (1/1) ... [2019-11-06 21:01:44,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268f2efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:44, skipping insertion in model container [2019-11-06 21:01:44,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:44" (1/1) ... [2019-11-06 21:01:44,351 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:01:44,468 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:01:45,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:01:45,987 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:01:46,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:01:46,323 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:01:46,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46 WrapperNode [2019-11-06 21:01:46,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:01:46,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:01:46,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:01:46,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:01:46,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... [2019-11-06 21:01:46,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:01:46,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:01:46,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:01:46,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:01:46,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 21:01:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:01:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:01:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 21:01:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 21:01:46,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-06 21:01:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-06 21:01:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 21:01:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 21:01:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 21:01:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 21:01:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2019-11-06 21:01:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2019-11-06 21:01:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2019-11-06 21:01:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2019-11-06 21:01:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2019-11-06 21:01:46,645 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2019-11-06 21:01:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-11-06 21:01:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:01:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2019-11-06 21:01:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2019-11-06 21:01:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2019-11-06 21:01:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2019-11-06 21:01:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-11-06 21:01:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-11-06 21:01:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2019-11-06 21:01:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2019-11-06 21:01:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2019-11-06 21:01:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-11-06 21:01:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-11-06 21:01:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 21:01:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-11-06 21:01:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 21:01:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 21:01:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 21:01:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 21:01:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-11-06 21:01:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-11-06 21:01:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2019-11-06 21:01:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-11-06 21:01:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-11-06 21:01:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-11-06 21:01:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-11-06 21:01:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-11-06 21:01:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-11-06 21:01:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-11-06 21:01:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-11-06 21:01:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-11-06 21:01:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-11-06 21:01:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-11-06 21:01:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-11-06 21:01:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-06 21:01:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-11-06 21:01:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-11-06 21:01:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2019-11-06 21:01:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2019-11-06 21:01:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2019-11-06 21:01:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2019-11-06 21:01:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-06 21:01:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-06 21:01:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-11-06 21:01:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-11-06 21:01:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-06 21:01:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-06 21:01:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-11-06 21:01:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2019-11-06 21:01:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2019-11-06 21:01:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-11-06 21:01:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2019-11-06 21:01:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2019-11-06 21:01:46,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2019-11-06 21:01:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2019-11-06 21:01:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2019-11-06 21:01:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-11-06 21:01:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2019-11-06 21:01:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2019-11-06 21:01:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2019-11-06 21:01:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2019-11-06 21:01:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2019-11-06 21:01:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2019-11-06 21:01:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 21:01:46,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2019-11-06 21:01:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 21:01:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-11-06 21:01:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-06 21:01:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-11-06 21:01:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-06 21:01:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-06 21:01:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-06 21:01:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2019-11-06 21:01:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-11-06 21:01:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-11-06 21:01:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-11-06 21:01:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-11-06 21:01:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 21:01:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 21:01:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 21:01:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 21:01:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:01:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 21:01:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-11-06 21:01:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:01:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 21:01:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 21:01:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-06 21:01:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-06 21:01:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 21:01:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 21:01:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 21:01:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 21:01:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 21:01:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2019-11-06 21:01:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2019-11-06 21:01:46,679 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-11-06 21:01:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2019-11-06 21:01:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2019-11-06 21:01:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-11-06 21:01:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2019-11-06 21:01:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2019-11-06 21:01:46,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-06 21:01:46,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-11-06 21:01:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-06 21:01:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-11-06 21:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-11-06 21:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-11-06 21:01:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-11-06 21:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-11-06 21:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2019-11-06 21:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2019-11-06 21:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:01:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2019-11-06 21:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2019-11-06 21:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2019-11-06 21:01:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2019-11-06 21:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 21:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-11-06 21:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 21:01:46,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 21:01:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-11-06 21:01:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 21:01:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 21:01:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 21:01:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 21:01:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-11-06 21:01:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-11-06 21:01:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-11-06 21:01:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-11-06 21:01:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-11-06 21:01:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-11-06 21:01:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-11-06 21:01:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-11-06 21:01:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-11-06 21:01:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-11-06 21:01:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-11-06 21:01:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-11-06 21:01:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-06 21:01:46,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-11-06 21:01:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2019-11-06 21:01:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2019-11-06 21:01:46,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2019-11-06 21:01:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2019-11-06 21:01:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-06 21:01:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-06 21:01:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-06 21:01:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-06 21:01:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2019-11-06 21:01:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2019-11-06 21:01:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-11-06 21:01:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2019-11-06 21:01:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2019-11-06 21:01:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2019-11-06 21:01:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2019-11-06 21:01:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 21:01:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:01:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 21:01:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:01:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:01:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:01:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:01:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:01:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:01:47,382 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 21:01:48,868 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:01:48,868 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:01:48,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:48 BoogieIcfgContainer [2019-11-06 21:01:48,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:01:48,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:01:48,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:01:48,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:01:48,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:01:44" (1/3) ... [2019-11-06 21:01:48,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9be336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:48, skipping insertion in model container [2019-11-06 21:01:48,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:46" (2/3) ... [2019-11-06 21:01:48,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9be336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:48, skipping insertion in model container [2019-11-06 21:01:48,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:48" (3/3) ... [2019-11-06 21:01:48,879 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-11-06 21:01:48,889 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:01:48,903 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:01:48,914 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:01:48,951 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:01:48,951 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:01:48,951 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:01:48,951 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:01:48,952 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:01:48,952 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:01:48,952 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:01:48,952 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:01:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-11-06 21:01:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-06 21:01:49,010 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:01:49,011 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:01:49,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:01:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:01:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1808975188, now seen corresponding path program 1 times [2019-11-06 21:01:49,029 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:01:49,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217980444] [2019-11-06 21:01:49,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:01:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,363 WARN L191 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:01:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-06 21:01:50,679 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217980444] [2019-11-06 21:01:50,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:01:50,681 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:01:50,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119932198] [2019-11-06 21:01:50,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:01:50,688 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:01:50,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:01:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:01:50,709 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2019-11-06 21:01:51,343 WARN L191 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:01:52,156 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:01:52,742 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 21:01:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:01:56,063 INFO L93 Difference]: Finished difference Result 680 states and 902 transitions. [2019-11-06 21:01:56,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:01:56,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2019-11-06 21:01:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:01:56,084 INFO L225 Difference]: With dead ends: 680 [2019-11-06 21:01:56,084 INFO L226 Difference]: Without dead ends: 414 [2019-11-06 21:01:56,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:01:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-11-06 21:01:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 372. [2019-11-06 21:01:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-11-06 21:01:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 479 transitions. [2019-11-06 21:01:56,209 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 479 transitions. Word has length 102 [2019-11-06 21:01:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:01:56,209 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 479 transitions. [2019-11-06 21:01:56,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:01:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 479 transitions. [2019-11-06 21:01:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 21:01:56,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:01:56,214 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:01:56,215 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:01:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:01:56,215 INFO L82 PathProgramCache]: Analyzing trace with hash 649460153, now seen corresponding path program 1 times [2019-11-06 21:01:56,215 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:01:56,216 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940486410] [2019-11-06 21:01:56,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:01:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,860 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:01:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:01:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-06 21:01:57,148 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940486410] [2019-11-06 21:01:57,149 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:01:57,149 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:01:57,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086424962] [2019-11-06 21:01:57,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:01:57,152 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:01:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:01:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:01:57,153 INFO L87 Difference]: Start difference. First operand 372 states and 479 transitions. Second operand 8 states. [2019-11-06 21:01:57,699 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:01:58,798 WARN L191 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:01:59,558 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 21:02:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:02:01,467 INFO L93 Difference]: Finished difference Result 1005 states and 1312 transitions. [2019-11-06 21:02:01,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 21:02:01,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-11-06 21:02:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:02:01,476 INFO L225 Difference]: With dead ends: 1005 [2019-11-06 21:02:01,476 INFO L226 Difference]: Without dead ends: 665 [2019-11-06 21:02:01,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:02:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-11-06 21:02:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 631. [2019-11-06 21:02:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-06 21:02:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 826 transitions. [2019-11-06 21:02:01,594 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 826 transitions. Word has length 105 [2019-11-06 21:02:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:02:01,595 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 826 transitions. [2019-11-06 21:02:01,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:02:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 826 transitions. [2019-11-06 21:02:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:02:01,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:02:01,601 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:02:01,601 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:02:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:02:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash -202503043, now seen corresponding path program 1 times [2019-11-06 21:02:01,602 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:02:01,602 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678811845] [2019-11-06 21:02:01,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:02:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,293 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:02:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-11-06 21:02:02,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678811845] [2019-11-06 21:02:02,599 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:02:02,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:02:02,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586000134] [2019-11-06 21:02:02,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:02:02,601 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:02:02,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:02:02,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:02:02,601 INFO L87 Difference]: Start difference. First operand 631 states and 826 transitions. Second operand 9 states. [2019-11-06 21:02:03,057 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:02:03,760 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:02:04,255 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 21:02:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:02:06,327 INFO L93 Difference]: Finished difference Result 683 states and 889 transitions. [2019-11-06 21:02:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:02:06,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-11-06 21:02:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:02:06,335 INFO L225 Difference]: With dead ends: 683 [2019-11-06 21:02:06,336 INFO L226 Difference]: Without dead ends: 672 [2019-11-06 21:02:06,336 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:02:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-06 21:02:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 631. [2019-11-06 21:02:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-06 21:02:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 825 transitions. [2019-11-06 21:02:06,413 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 825 transitions. Word has length 125 [2019-11-06 21:02:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:02:06,413 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 825 transitions. [2019-11-06 21:02:06,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:02:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 825 transitions. [2019-11-06 21:02:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:02:06,416 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:02:06,416 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:02:06,416 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:02:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:02:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash -145244741, now seen corresponding path program 1 times [2019-11-06 21:02:06,417 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:02:06,417 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112622493] [2019-11-06 21:02:06,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:02:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:06,996 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:02:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-11-06 21:02:07,371 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112622493] [2019-11-06 21:02:07,372 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:02:07,372 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:02:07,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216998283] [2019-11-06 21:02:07,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:02:07,373 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:02:07,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:02:07,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:02:07,374 INFO L87 Difference]: Start difference. First operand 631 states and 825 transitions. Second operand 9 states. [2019-11-06 21:02:07,943 WARN L191 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:02:08,734 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:02:09,221 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 21:02:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:02:11,176 INFO L93 Difference]: Finished difference Result 663 states and 863 transitions. [2019-11-06 21:02:11,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:02:11,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-11-06 21:02:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:02:11,184 INFO L225 Difference]: With dead ends: 663 [2019-11-06 21:02:11,185 INFO L226 Difference]: Without dead ends: 660 [2019-11-06 21:02:11,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:02:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-11-06 21:02:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 630. [2019-11-06 21:02:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-11-06 21:02:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 823 transitions. [2019-11-06 21:02:11,274 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 823 transitions. Word has length 125 [2019-11-06 21:02:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:02:11,275 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 823 transitions. [2019-11-06 21:02:11,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:02:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 823 transitions. [2019-11-06 21:02:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-06 21:02:11,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:02:11,277 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:02:11,278 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:02:11,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:02:11,278 INFO L82 PathProgramCache]: Analyzing trace with hash -207810934, now seen corresponding path program 1 times [2019-11-06 21:02:11,278 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:02:11,278 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516608518] [2019-11-06 21:02:11,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:02:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:11,939 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:02:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-11-06 21:02:12,308 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516608518] [2019-11-06 21:02:12,308 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:02:12,308 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:02:12,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226548078] [2019-11-06 21:02:12,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:02:12,309 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:02:12,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:02:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:02:12,310 INFO L87 Difference]: Start difference. First operand 630 states and 823 transitions. Second operand 9 states. [2019-11-06 21:02:12,769 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:02:13,444 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:02:13,925 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-11-06 21:02:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:02:16,066 INFO L93 Difference]: Finished difference Result 662 states and 861 transitions. [2019-11-06 21:02:16,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:02:16,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2019-11-06 21:02:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:02:16,072 INFO L225 Difference]: With dead ends: 662 [2019-11-06 21:02:16,072 INFO L226 Difference]: Without dead ends: 659 [2019-11-06 21:02:16,073 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:02:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-11-06 21:02:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 629. [2019-11-06 21:02:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-06 21:02:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 821 transitions. [2019-11-06 21:02:16,142 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 821 transitions. Word has length 126 [2019-11-06 21:02:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:02:16,143 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 821 transitions. [2019-11-06 21:02:16,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:02:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 821 transitions. [2019-11-06 21:02:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-06 21:02:16,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:02:16,145 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:02:16,145 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:02:16,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:02:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2147358050, now seen corresponding path program 1 times [2019-11-06 21:02:16,145 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:02:16,146 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142660652] [2019-11-06 21:02:16,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:02:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,707 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-11-06 21:02:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:02:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-11-06 21:02:17,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142660652] [2019-11-06 21:02:17,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:02:17,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:02:17,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061966935] [2019-11-06 21:02:17,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:02:17,160 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:02:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:02:17,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:02:17,160 INFO L87 Difference]: Start difference. First operand 629 states and 821 transitions. Second operand 9 states. [2019-11-06 21:02:17,651 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-11-06 21:02:18,274 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-11-06 21:02:18,762 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 234