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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:57:26,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:57:26,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:57:26,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:57:26,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:57:26,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:57:26,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:57:26,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:57:26,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:57:26,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:57:26,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:57:26,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:57:26,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:57:26,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:57:26,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:57:26,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:57:26,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:57:26,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:57:26,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:57:26,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:57:26,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:57:26,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:57:26,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:57:26,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:57:26,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:57:26,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:57:26,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:57:26,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:57:26,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:57:26,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:57:26,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:57:26,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:57:26,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:57:26,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:57:26,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:57:26,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:57:26,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:57:26,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:57:26,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:57:26,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:57:26,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:57:26,102 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 [2019-10-15 02:57:26,120 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:57:26,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:57:26,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:57:26,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:57:26,122 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:57:26,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:57:26,122 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:57:26,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:57:26,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:57:26,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:57:26,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:57:26,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:57:26,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:57:26,124 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:57:26,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:57:26,124 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:57:26,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:57:26,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:57:26,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:57:26,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:57:26,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:57:26,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:57:26,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:57:26,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:57:26,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:57:26,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:57:26,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:57:26,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:57:26,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:57:26,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:57:26,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:57:26,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:57:26,434 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:57:26,434 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:57:26,435 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:26,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82426b9d7/0462d64afc4947d495dad3e229f7f593/FLAGf26636e78 [2019-10-15 02:57:27,216 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:57:27,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:27,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82426b9d7/0462d64afc4947d495dad3e229f7f593/FLAGf26636e78 [2019-10-15 02:57:27,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82426b9d7/0462d64afc4947d495dad3e229f7f593 [2019-10-15 02:57:27,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:57:27,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:57:27,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:57:27,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:57:27,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:57:27,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:57:27" (1/1) ... [2019-10-15 02:57:27,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab44c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:27, skipping insertion in model container [2019-10-15 02:57:27,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:57:27" (1/1) ... [2019-10-15 02:57:27,361 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:57:27,463 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:57:28,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:57:28,726 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:57:29,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:57:29,259 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:57:29,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29 WrapperNode [2019-10-15 02:57:29,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:57:29,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:57:29,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:57:29,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:57:29,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (1/1) ... [2019-10-15 02:57:29,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:57:29,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:57:29,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:57:29,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:57:29,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (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 [2019-10-15 02:57:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:57:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:57:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 02:57:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-15 02:57:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 02:57:29,670 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-10-15 02:57:29,670 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-15 02:57:29,671 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-10-15 02:57:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-10-15 02:57:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 02:57:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-15 02:57:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2019-10-15 02:57:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2019-10-15 02:57:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:57:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2019-10-15 02:57:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2019-10-15 02:57:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2019-10-15 02:57:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2019-10-15 02:57:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:57:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:57:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 02:57:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 02:57:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:57:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:57:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:57:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:57:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:57:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:57:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:57:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-10-15 02:57:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-10-15 02:57:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-10-15 02:57:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2019-10-15 02:57:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2019-10-15 02:57:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2019-10-15 02:57:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-15 02:57:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-15 02:57:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2019-10-15 02:57:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:57:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:57:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:57:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2019-10-15 02:57:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:57:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-15 02:57:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:57:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2019-10-15 02:57:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2019-10-15 02:57:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2019-10-15 02:57:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2019-10-15 02:57:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2019-10-15 02:57:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-10-15 02:57:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2019-10-15 02:57:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2019-10-15 02:57:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2019-10-15 02:57:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2019-10-15 02:57:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2019-10-15 02:57:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2019-10-15 02:57:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2019-10-15 02:57:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2019-10-15 02:57:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2019-10-15 02:57:29,691 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2019-10-15 02:57:29,692 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2019-10-15 02:57:29,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2019-10-15 02:57:29,694 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2019-10-15 02:57:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2019-10-15 02:57:29,696 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2019-10-15 02:57:29,696 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2019-10-15 02:57:29,696 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:57:29,696 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:57:29,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:57:29,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:57:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:57:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-10-15 02:57:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 02:57:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-15 02:57:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-10-15 02:57:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:57:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-10-15 02:57:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-15 02:57:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-15 02:57:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-15 02:57:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:57:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-15 02:57:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-10-15 02:57:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:57:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-15 02:57:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-10-15 02:57:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 02:57:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-15 02:57:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:57:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 02:57:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-15 02:57:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2019-10-15 02:57:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2019-10-15 02:57:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2019-10-15 02:57:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2019-10-15 02:57:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2019-10-15 02:57:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2019-10-15 02:57:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:57:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2019-10-15 02:57:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:57:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2019-10-15 02:57:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2019-10-15 02:57:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2019-10-15 02:57:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2019-10-15 02:57:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2019-10-15 02:57:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:57:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 02:57:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:57:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2019-10-15 02:57:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2019-10-15 02:57:29,725 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2019-10-15 02:57:29,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2019-10-15 02:57:29,727 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-15 02:57:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2019-10-15 02:57:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:57:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:57:30,874 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:57:33,410 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:57:33,411 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 02:57:33,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:33 BoogieIcfgContainer [2019-10-15 02:57:33,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:57:33,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:57:33,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:57:33,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:57:33,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:57:27" (1/3) ... [2019-10-15 02:57:33,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0799a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:33, skipping insertion in model container [2019-10-15 02:57:33,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:57:29" (2/3) ... [2019-10-15 02:57:33,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce0799a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:33, skipping insertion in model container [2019-10-15 02:57:33,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:33" (3/3) ... [2019-10-15 02:57:33,420 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 02:57:33,430 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:57:33,443 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:57:33,456 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:57:33,504 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:57:33,504 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:57:33,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:57:33,504 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:57:33,504 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:57:33,504 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:57:33,504 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:57:33,505 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:57:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states. [2019-10-15 02:57:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 02:57:33,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:33,563 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:33,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 292547117, now seen corresponding path program 1 times [2019-10-15 02:57:33,582 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:33,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433815087] [2019-10-15 02:57:33,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:33,583 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:33,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 02:57:34,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433815087] [2019-10-15 02:57:34,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:34,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:57:34,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928032661] [2019-10-15 02:57:34,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:57:34,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:34,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:57:34,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:34,203 INFO L87 Difference]: Start difference. First operand 643 states. Second operand 3 states. [2019-10-15 02:57:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:34,492 INFO L93 Difference]: Finished difference Result 1789 states and 2156 transitions. [2019-10-15 02:57:34,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:57:34,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-10-15 02:57:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:34,539 INFO L225 Difference]: With dead ends: 1789 [2019-10-15 02:57:34,539 INFO L226 Difference]: Without dead ends: 1152 [2019-10-15 02:57:34,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2019-10-15 02:57:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1149. [2019-10-15 02:57:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-10-15 02:57:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1359 transitions. [2019-10-15 02:57:34,741 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1359 transitions. Word has length 54 [2019-10-15 02:57:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:34,742 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 1359 transitions. [2019-10-15 02:57:34,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:57:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1359 transitions. [2019-10-15 02:57:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 02:57:34,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:34,763 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:34,763 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1493337068, now seen corresponding path program 1 times [2019-10-15 02:57:34,764 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:34,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304679673] [2019-10-15 02:57:34,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:34,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:34,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 02:57:34,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304679673] [2019-10-15 02:57:34,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:34,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:57:34,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463884648] [2019-10-15 02:57:34,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:57:34,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:34,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:57:34,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:34,988 INFO L87 Difference]: Start difference. First operand 1149 states and 1359 transitions. Second operand 3 states. [2019-10-15 02:57:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:35,083 INFO L93 Difference]: Finished difference Result 2223 states and 2640 transitions. [2019-10-15 02:57:35,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:57:35,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-10-15 02:57:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:35,097 INFO L225 Difference]: With dead ends: 2223 [2019-10-15 02:57:35,098 INFO L226 Difference]: Without dead ends: 2207 [2019-10-15 02:57:35,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:35,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2019-10-15 02:57:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2019-10-15 02:57:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2019-10-15 02:57:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2620 transitions. [2019-10-15 02:57:35,244 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2620 transitions. Word has length 57 [2019-10-15 02:57:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:35,245 INFO L462 AbstractCegarLoop]: Abstraction has 2207 states and 2620 transitions. [2019-10-15 02:57:35,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:57:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2620 transitions. [2019-10-15 02:57:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 02:57:35,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:35,262 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:35,263 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1430438193, now seen corresponding path program 1 times [2019-10-15 02:57:35,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:35,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453206295] [2019-10-15 02:57:35,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:35,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:35,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 02:57:35,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453206295] [2019-10-15 02:57:35,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:35,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:57:35,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419628722] [2019-10-15 02:57:35,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:57:35,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:57:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:35,457 INFO L87 Difference]: Start difference. First operand 2207 states and 2620 transitions. Second operand 3 states. [2019-10-15 02:57:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:35,747 INFO L93 Difference]: Finished difference Result 6234 states and 7389 transitions. [2019-10-15 02:57:35,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:57:35,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-10-15 02:57:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:35,785 INFO L225 Difference]: With dead ends: 6234 [2019-10-15 02:57:35,785 INFO L226 Difference]: Without dead ends: 4048 [2019-10-15 02:57:35,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:57:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2019-10-15 02:57:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4033. [2019-10-15 02:57:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4033 states. [2019-10-15 02:57:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4775 transitions. [2019-10-15 02:57:36,021 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4775 transitions. Word has length 129 [2019-10-15 02:57:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:36,024 INFO L462 AbstractCegarLoop]: Abstraction has 4033 states and 4775 transitions. [2019-10-15 02:57:36,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:57:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4775 transitions. [2019-10-15 02:57:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 02:57:36,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:36,041 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:36,041 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1994225214, now seen corresponding path program 1 times [2019-10-15 02:57:36,042 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:36,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699359173] [2019-10-15 02:57:36,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:36,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:36,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 02:57:36,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699359173] [2019-10-15 02:57:36,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:57:36,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:57:36,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699330912] [2019-10-15 02:57:36,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:57:36,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:36,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:57:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:57:36,354 INFO L87 Difference]: Start difference. First operand 4033 states and 4775 transitions. Second operand 5 states. [2019-10-15 02:57:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:36,627 INFO L93 Difference]: Finished difference Result 8064 states and 9551 transitions. [2019-10-15 02:57:36,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:57:36,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2019-10-15 02:57:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:36,654 INFO L225 Difference]: With dead ends: 8064 [2019-10-15 02:57:36,654 INFO L226 Difference]: Without dead ends: 4048 [2019-10-15 02:57:36,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:57:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2019-10-15 02:57:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4040. [2019-10-15 02:57:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-10-15 02:57:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4780 transitions. [2019-10-15 02:57:36,861 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4780 transitions. Word has length 168 [2019-10-15 02:57:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:36,862 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 4780 transitions. [2019-10-15 02:57:36,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:57:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4780 transitions. [2019-10-15 02:57:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 02:57:36,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:36,872 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:36,872 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1782482205, now seen corresponding path program 1 times [2019-10-15 02:57:36,873 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:36,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241459994] [2019-10-15 02:57:36,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:36,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:36,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 02:57:37,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241459994] [2019-10-15 02:57:37,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993108206] [2019-10-15 02:57:37,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:57:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:38,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 02:57:38,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:57:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 02:57:38,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:57:38,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:38,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 02:57:38,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:57:38,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2019-10-15 02:57:38,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536854375] [2019-10-15 02:57:38,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:57:38,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:57:38,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:57:38,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-15 02:57:38,806 INFO L87 Difference]: Start difference. First operand 4040 states and 4780 transitions. Second operand 6 states. [2019-10-15 02:57:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:57:39,108 INFO L93 Difference]: Finished difference Result 8067 states and 9548 transitions. [2019-10-15 02:57:39,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:57:39,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2019-10-15 02:57:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:57:39,133 INFO L225 Difference]: With dead ends: 8067 [2019-10-15 02:57:39,133 INFO L226 Difference]: Without dead ends: 4041 [2019-10-15 02:57:39,146 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 02:57:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2019-10-15 02:57:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 4041. [2019-10-15 02:57:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4041 states. [2019-10-15 02:57:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 4781 transitions. [2019-10-15 02:57:39,327 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 4781 transitions. Word has length 172 [2019-10-15 02:57:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:57:39,327 INFO L462 AbstractCegarLoop]: Abstraction has 4041 states and 4781 transitions. [2019-10-15 02:57:39,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:57:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 4781 transitions. [2019-10-15 02:57:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 02:57:39,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:57:39,335 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:57:39,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:57:39,543 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:57:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:57:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash 722073599, now seen corresponding path program 1 times [2019-10-15 02:57:39,544 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:57:39,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835443083] [2019-10-15 02:57:39,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:39,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:57:39,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:57:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 02:57:39,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835443083] [2019-10-15 02:57:39,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494672158] [2019-10-15 02:57:39,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:57:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:57:40,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 02:57:40,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:57:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 02:57:40,582 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:57:40,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:40,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:40,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:40,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:57:47,075 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-15 02:57:47,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 02:57:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 02:57:47,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1322096566] [2019-10-15 02:57:47,283 INFO L162 IcfgInterpreter]: Started Sifa with 140 locations of interest [2019-10-15 02:57:47,283 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:57:47,290 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:57:47,298 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:57:47,299 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:57:47,989 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-15 02:57:48,643 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-15 02:57:48,867 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-15 02:57:48,991 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-15 02:57:49,227 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:49,410 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:49,634 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:49,931 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:50,890 WARN L191 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 510 [2019-10-15 02:57:51,039 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:51,191 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:51,326 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:51,468 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:51,597 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-10-15 02:57:51,616 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 133 for LOIs [2019-10-15 02:57:51,858 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 526 for LOIs [2019-10-15 02:57:52,159 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 572 [2019-10-15 02:57:52,616 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 596 [2019-10-15 02:57:54,304 WARN L191 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-10-15 02:57:54,514 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 728 [2019-10-15 02:57:55,043 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-10-15 02:57:55,271 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-15 02:57:55,381 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-15 02:57:55,530 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 609 [2019-10-15 02:57:56,436 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-10-15 02:57:56,653 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-10-15 02:57:57,172 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 724 [2019-10-15 02:57:57,521 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 02:57:57,778 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-10-15 02:57:58,094 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-10-15 02:57:58,336 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:57:58,558 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:57:58,870 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-10-15 02:57:59,110 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:57:59,323 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:57:59,627 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-10-15 02:57:59,841 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:58:00,052 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:58:00,335 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-10-15 02:58:00,546 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:58:00,790 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 02:58:01,080 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-10-15 02:58:01,295 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 565