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-f4eb214f-m [2019-10-13 19:04:19,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:04:19,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:04:19,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:04:19,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:04:19,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:04:19,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:04:19,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:04:19,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:04:19,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:04:19,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:04:19,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:04:19,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:04:19,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:04:19,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:04:19,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:04:19,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:04:19,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:04:19,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:04:19,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:04:19,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:04:19,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:04:19,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:04:19,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:04:19,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:04:19,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:04:19,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:04:19,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:04:19,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:04:19,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:04:19,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:04:19,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:04:19,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:04:19,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:04:19,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:04:19,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:04:19,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:04:19,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:04:19,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:04:19,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:04:19,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:04:19,145 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 [2019-10-13 19:04:19,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:04:19,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:04:19,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:04:19,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:04:19,173 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:04:19,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:04:19,173 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:04:19,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:04:19,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:04:19,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:04:19,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:04:19,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:04:19,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:04:19,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:04:19,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:04:19,176 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:04:19,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:04:19,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:04:19,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:04:19,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:04:19,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:04:19,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:04:19,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:04:19,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:04:19,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:04:19,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:04:19,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:04:19,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:04:19,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:04:19,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:04:19,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:04:19,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:04:19,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:04:19,472 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:04:19,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-13 19:04:19,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cfbb59cf/43d00b8a48ff43e59d9e72b5d355abf3/FLAG59c610a62 [2019-10-13 19:04:20,297 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:04:20,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-13 19:04:20,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cfbb59cf/43d00b8a48ff43e59d9e72b5d355abf3/FLAG59c610a62 [2019-10-13 19:04:20,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cfbb59cf/43d00b8a48ff43e59d9e72b5d355abf3 [2019-10-13 19:04:20,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:04:20,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:04:20,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:04:20,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:04:20,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:04:20,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:20" (1/1) ... [2019-10-13 19:04:20,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66aab1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20, skipping insertion in model container [2019-10-13 19:04:20,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:20" (1/1) ... [2019-10-13 19:04:20,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:04:20,542 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:04:21,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:04:21,963 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:04:22,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:04:22,386 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:04:22,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22 WrapperNode [2019-10-13 19:04:22,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:04:22,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:04:22,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:04:22,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:04:22,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (1/1) ... [2019-10-13 19:04:22,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:04:22,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:04:22,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:04:22,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:04:22,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (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 [2019-10-13 19:04:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:04:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:04:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 19:04:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 19:04:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 19:04:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 19:04:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 19:04:22,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 19:04:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 19:04:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 19:04:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2019-10-13 19:04:22,741 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2019-10-13 19:04:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2019-10-13 19:04:22,742 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2019-10-13 19:04:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2019-10-13 19:04:22,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2019-10-13 19:04:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-13 19:04:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:04:22,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2019-10-13 19:04:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2019-10-13 19:04:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2019-10-13 19:04:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2019-10-13 19:04:22,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-10-13 19:04:22,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-10-13 19:04:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 19:04:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-13 19:04:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 19:04:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 19:04:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-13 19:04:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-13 19:04:22,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 19:04:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-13 19:04:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-13 19:04:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2019-10-13 19:04:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2019-10-13 19:04:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2019-10-13 19:04:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2019-10-13 19:04:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 19:04:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 19:04:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 19:04:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 19:04:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 19:04:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 19:04:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 19:04:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2019-10-13 19:04:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-13 19:04:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-13 19:04:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-13 19:04:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2019-10-13 19:04:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2019-10-13 19:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2019-10-13 19:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2019-10-13 19:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-10-13 19:04:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2019-10-13 19:04:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2019-10-13 19:04:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2019-10-13 19:04:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2019-10-13 19:04:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2019-10-13 19:04:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2019-10-13 19:04:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 19:04:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2019-10-13 19:04:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 19:04:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-13 19:04:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 19:04:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-13 19:04:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 19:04:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 19:04:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 19:04:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2019-10-13 19:04:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-10-13 19:04:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-10-13 19:04:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-10-13 19:04:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-10-13 19:04:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 19:04:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 19:04:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 19:04:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 19:04:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:04:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 19:04:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 19:04:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 19:04:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 19:04:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 19:04:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 19:04:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 19:04:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 19:04:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 19:04:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2019-10-13 19:04:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-13 19:04:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-13 19:04:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-13 19:04:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-13 19:04:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 19:04:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 19:04:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 19:04:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2019-10-13 19:04:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2019-10-13 19:04:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-13 19:04:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2019-10-13 19:04:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2019-10-13 19:04:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 19:04:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-10-13 19:04:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 19:04:22,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-10-13 19:04:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-10-13 19:04:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:04:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:04:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2019-10-13 19:04:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2019-10-13 19:04:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2019-10-13 19:04:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2019-10-13 19:04:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 19:04:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-13 19:04:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 19:04:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:04:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:04:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:04:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 19:04:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-13 19:04:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-13 19:04:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-13 19:04:22,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 19:04:22,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2019-10-13 19:04:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-13 19:04:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-13 19:04:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-13 19:04:22,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2019-10-13 19:04:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:04:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:04:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:04:23,478 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 19:04:24,965 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:04:24,966 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:04:24,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:24 BoogieIcfgContainer [2019-10-13 19:04:24,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:04:24,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:04:24,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:04:24,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:04:24,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:20" (1/3) ... [2019-10-13 19:04:24,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40249661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:24, skipping insertion in model container [2019-10-13 19:04:24,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:22" (2/3) ... [2019-10-13 19:04:24,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40249661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:24, skipping insertion in model container [2019-10-13 19:04:24,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:24" (3/3) ... [2019-10-13 19:04:24,977 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-13 19:04:24,987 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:04:24,999 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:04:25,012 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:04:25,054 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:04:25,054 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:04:25,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:04:25,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:04:25,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:04:25,055 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:04:25,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:04:25,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:04:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-13 19:04:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:04:25,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:25,122 INFO L380 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] [2019-10-13 19:04:25,124 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1808975188, now seen corresponding path program 1 times [2019-10-13 19:04:25,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:25,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123170224] [2019-10-13 19:04:25,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:25,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:25,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,410 WARN L191 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-13 19:04:26,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123170224] [2019-10-13 19:04:26,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:26,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:04:26,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873495096] [2019-10-13 19:04:26,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:04:26,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:26,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:04:26,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:04:26,755 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2019-10-13 19:04:27,262 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:27,948 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:28,393 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:31,457 INFO L93 Difference]: Finished difference Result 680 states and 902 transitions. [2019-10-13 19:04:31,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:04:31,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2019-10-13 19:04:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:31,478 INFO L225 Difference]: With dead ends: 680 [2019-10-13 19:04:31,479 INFO L226 Difference]: Without dead ends: 414 [2019-10-13 19:04:31,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:04:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-13 19:04:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 372. [2019-10-13 19:04:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-13 19:04:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 479 transitions. [2019-10-13 19:04:31,605 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 479 transitions. Word has length 102 [2019-10-13 19:04:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:04:31,606 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 479 transitions. [2019-10-13 19:04:31,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:04:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 479 transitions. [2019-10-13 19:04:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 19:04:31,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:31,611 INFO L380 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] [2019-10-13 19:04:31,611 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:31,612 INFO L82 PathProgramCache]: Analyzing trace with hash 649460153, now seen corresponding path program 1 times [2019-10-13 19:04:31,612 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:31,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991557181] [2019-10-13 19:04:31,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:31,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:31,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,190 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-13 19:04:32,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991557181] [2019-10-13 19:04:32,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:32,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:04:32,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409264338] [2019-10-13 19:04:32,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:04:32,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:32,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:04:32,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:04:32,453 INFO L87 Difference]: Start difference. First operand 372 states and 479 transitions. Second operand 8 states. [2019-10-13 19:04:32,857 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:33,870 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:34,517 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:36,399 INFO L93 Difference]: Finished difference Result 1005 states and 1312 transitions. [2019-10-13 19:04:36,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:04:36,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-13 19:04:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:36,407 INFO L225 Difference]: With dead ends: 1005 [2019-10-13 19:04:36,407 INFO L226 Difference]: Without dead ends: 665 [2019-10-13 19:04:36,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:04:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-13 19:04:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 631. [2019-10-13 19:04:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 19:04:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 826 transitions. [2019-10-13 19:04:36,507 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 826 transitions. Word has length 105 [2019-10-13 19:04:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:04:36,508 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 826 transitions. [2019-10-13 19:04:36,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:04:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 826 transitions. [2019-10-13 19:04:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:04:36,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:36,511 INFO L380 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] [2019-10-13 19:04:36,512 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash -202503043, now seen corresponding path program 1 times [2019-10-13 19:04:36,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:36,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601338194] [2019-10-13 19:04:36,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:36,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:36,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,091 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-13 19:04:37,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601338194] [2019-10-13 19:04:37,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:37,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:04:37,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131906298] [2019-10-13 19:04:37,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:04:37,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:37,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:04:37,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:04:37,501 INFO L87 Difference]: Start difference. First operand 631 states and 826 transitions. Second operand 9 states. [2019-10-13 19:04:37,943 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:38,537 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:38,978 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:40,950 INFO L93 Difference]: Finished difference Result 683 states and 889 transitions. [2019-10-13 19:04:40,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:04:40,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-10-13 19:04:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:40,957 INFO L225 Difference]: With dead ends: 683 [2019-10-13 19:04:40,958 INFO L226 Difference]: Without dead ends: 672 [2019-10-13 19:04:40,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:04:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-10-13 19:04:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 631. [2019-10-13 19:04:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-13 19:04:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 825 transitions. [2019-10-13 19:04:41,046 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 825 transitions. Word has length 125 [2019-10-13 19:04:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:04:41,047 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 825 transitions. [2019-10-13 19:04:41,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:04:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 825 transitions. [2019-10-13 19:04:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:04:41,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:41,050 INFO L380 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] [2019-10-13 19:04:41,050 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:41,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:41,050 INFO L82 PathProgramCache]: Analyzing trace with hash -145244741, now seen corresponding path program 1 times [2019-10-13 19:04:41,051 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:41,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294760882] [2019-10-13 19:04:41,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:41,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:41,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,616 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-13 19:04:42,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294760882] [2019-10-13 19:04:42,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:42,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:04:42,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95621592] [2019-10-13 19:04:42,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:04:42,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:42,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:04:42,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:04:42,069 INFO L87 Difference]: Start difference. First operand 631 states and 825 transitions. Second operand 9 states. [2019-10-13 19:04:42,564 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:43,560 WARN L191 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:43,994 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:45,886 INFO L93 Difference]: Finished difference Result 663 states and 863 transitions. [2019-10-13 19:04:45,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:04:45,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-10-13 19:04:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:45,895 INFO L225 Difference]: With dead ends: 663 [2019-10-13 19:04:45,895 INFO L226 Difference]: Without dead ends: 660 [2019-10-13 19:04:45,898 INFO L600 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 [2019-10-13 19:04:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-13 19:04:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 630. [2019-10-13 19:04:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 19:04:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 823 transitions. [2019-10-13 19:04:45,990 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 823 transitions. Word has length 125 [2019-10-13 19:04:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:04:45,991 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 823 transitions. [2019-10-13 19:04:45,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:04:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 823 transitions. [2019-10-13 19:04:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-13 19:04:45,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:45,993 INFO L380 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] [2019-10-13 19:04:45,993 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -207810934, now seen corresponding path program 1 times [2019-10-13 19:04:45,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:45,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697822579] [2019-10-13 19:04:45,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:45,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:45,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,542 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-13 19:04:46,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697822579] [2019-10-13 19:04:46,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:46,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:04:46,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372025790] [2019-10-13 19:04:46,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:04:46,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:46,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:04:46,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:04:46,930 INFO L87 Difference]: Start difference. First operand 630 states and 823 transitions. Second operand 9 states. [2019-10-13 19:04:47,342 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:47,920 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:48,351 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:50,379 INFO L93 Difference]: Finished difference Result 662 states and 861 transitions. [2019-10-13 19:04:50,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:04:50,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2019-10-13 19:04:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:50,385 INFO L225 Difference]: With dead ends: 662 [2019-10-13 19:04:50,385 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 19:04:50,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:04:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 19:04:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 629. [2019-10-13 19:04:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:04:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 821 transitions. [2019-10-13 19:04:50,459 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 821 transitions. Word has length 126 [2019-10-13 19:04:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:04:50,459 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 821 transitions. [2019-10-13 19:04:50,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:04:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 821 transitions. [2019-10-13 19:04:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:04:50,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:04:50,462 INFO L380 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] [2019-10-13 19:04:50,462 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:04:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:04:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash -2147358050, now seen corresponding path program 1 times [2019-10-13 19:04:50,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:04:50,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968600775] [2019-10-13 19:04:50,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:50,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:04:50,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:04:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:50,983 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-13 19:04:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:04:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-13 19:04:51,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968600775] [2019-10-13 19:04:51,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:04:51,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:04:51,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094176523] [2019-10-13 19:04:51,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:04:51,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:04:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:04:51,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:04:51,384 INFO L87 Difference]: Start difference. First operand 629 states and 821 transitions. Second operand 9 states. [2019-10-13 19:04:51,851 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-13 19:04:52,385 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-13 19:04:52,796 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-13 19:04:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:04:54,597 INFO L93 Difference]: Finished difference Result 661 states and 859 transitions. [2019-10-13 19:04:54,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:04:54,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2019-10-13 19:04:54,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:04:54,601 INFO L225 Difference]: With dead ends: 661 [2019-10-13 19:04:54,602 INFO L226 Difference]: Without dead ends: 658 [2019-10-13 19:04:54,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:04:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states.