/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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-fb55353 [2019-11-07 03:53:08,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:53:08,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:53:08,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:53:08,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:53:08,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:53:08,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:53:08,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:53:08,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:53:08,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:53:08,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:53:08,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:53:08,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:53:08,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:53:08,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:53:08,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:53:08,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:53:08,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:53:08,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:53:08,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:53:08,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:53:08,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:53:08,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:53:08,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:53:08,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:53:08,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:53:08,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:53:08,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:53:08,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:53:08,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:53:08,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:53:08,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:53:08,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:53:08,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:53:08,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:53:08,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:53:08,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:53:08,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:53:08,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:53:08,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:53:08,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:53:08,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 03:53:08,821 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:53:08,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:53:08,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:53:08,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:53:08,824 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:53:08,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:53:08,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:53:08,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:53:08,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:53:08,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:53:08,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:53:08,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:53:08,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:53:08,828 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:53:08,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:53:08,828 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:53:08,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:53:08,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:53:08,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:53:08,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:53:08,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:53:08,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:53:08,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:53:08,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:53:08,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:53:08,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:53:08,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:53:08,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:53:08,831 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 [2019-11-07 03:53:09,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:53:09,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:53:09,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:53:09,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:53:09,201 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:53:09,202 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:53:09,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc51ceab/47bff2fb5b3c42838acc642b122d3350/FLAG9fa579bf7 [2019-11-07 03:53:10,001 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:53:10,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:53:10,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc51ceab/47bff2fb5b3c42838acc642b122d3350/FLAG9fa579bf7 [2019-11-07 03:53:10,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc51ceab/47bff2fb5b3c42838acc642b122d3350 [2019-11-07 03:53:10,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:53:10,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:53:10,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:53:10,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:53:10,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:53:10,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:10" (1/1) ... [2019-11-07 03:53:10,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a8be27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:10, skipping insertion in model container [2019-11-07 03:53:10,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:10" (1/1) ... [2019-11-07 03:53:10,128 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:53:10,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:53:11,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:53:11,341 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:53:11,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:53:11,735 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:53:11,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11 WrapperNode [2019-11-07 03:53:11,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:53:11,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:53:11,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:53:11,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:53:11,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... [2019-11-07 03:53:11,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:53:11,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:53:11,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:53:11,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:53:11,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:53:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:53:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:53:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-07 03:53:12,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-11-07 03:53:12,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 03:53:12,064 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-11-07 03:53:12,064 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-11-07 03:53:12,064 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-11-07 03:53:12,065 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-11-07 03:53:12,065 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 03:53:12,065 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-07 03:53:12,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2019-11-07 03:53:12,065 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2019-11-07 03:53:12,066 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 03:53:12,066 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2019-11-07 03:53:12,066 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2019-11-07 03:53:12,066 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2019-11-07 03:53:12,066 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2019-11-07 03:53:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 03:53:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 03:53:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 03:53:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 03:53:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 03:53:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 03:53:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 03:53:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 03:53:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 03:53:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2019-11-07 03:53:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2019-11-07 03:53:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2019-11-07 03:53:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-11-07 03:53:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 03:53:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2019-11-07 03:53:12,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 03:53:12,075 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2019-11-07 03:53:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2019-11-07 03:53:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2019-11-07 03:53:12,078 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2019-11-07 03:53:12,078 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2019-11-07 03:53:12,078 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2019-11-07 03:53:12,078 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2019-11-07 03:53:12,078 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 03:53:12,079 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 03:53:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2019-11-07 03:53:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 03:53:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 03:53:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 03:53:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:53:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 03:53:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-11-07 03:53:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-07 03:53:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:53:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 03:53:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2019-11-07 03:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2019-11-07 03:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 03:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 03:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2019-11-07 03:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2019-11-07 03:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2019-11-07 03:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2019-11-07 03:53:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2019-11-07 03:53:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2019-11-07 03:53:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2019-11-07 03:53:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2019-11-07 03:53:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2019-11-07 03:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2019-11-07 03:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2019-11-07 03:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2019-11-07 03:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2019-11-07 03:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2019-11-07 03:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2019-11-07 03:53:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2019-11-07 03:53:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2019-11-07 03:53:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2019-11-07 03:53:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2019-11-07 03:53:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2019-11-07 03:53:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 03:53:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 03:53:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2019-11-07 03:53:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 03:53:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 03:53:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 03:53:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 03:53:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 03:53:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-11-07 03:53:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2019-11-07 03:53:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2019-11-07 03:53:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2019-11-07 03:53:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2019-11-07 03:53:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2019-11-07 03:53:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2019-11-07 03:53:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2019-11-07 03:53:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2019-11-07 03:53:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2019-11-07 03:53:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-07 03:53:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2019-11-07 03:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-11-07 03:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2019-11-07 03:53:12,102 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2019-11-07 03:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2019-11-07 03:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2019-11-07 03:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2019-11-07 03:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2019-11-07 03:53:12,103 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 03:53:12,104 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2019-11-07 03:53:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 03:53:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 03:53:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:53:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 03:53:12,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:53:12,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:53:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:53:12,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:53:13,228 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 03:53:15,746 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:53:15,747 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:53:15,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:15 BoogieIcfgContainer [2019-11-07 03:53:15,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:53:15,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:53:15,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:53:15,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:53:15,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:53:10" (1/3) ... [2019-11-07 03:53:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bab9a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:15, skipping insertion in model container [2019-11-07 03:53:15,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:11" (2/3) ... [2019-11-07 03:53:15,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bab9a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:15, skipping insertion in model container [2019-11-07 03:53:15,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:15" (3/3) ... [2019-11-07 03:53:15,765 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 [2019-11-07 03:53:15,782 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:53:15,799 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:53:15,811 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:53:15,856 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:53:15,857 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:53:15,857 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:53:15,857 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:53:15,857 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:53:15,857 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:53:15,857 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:53:15,857 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:53:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states. [2019-11-07 03:53:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-07 03:53:15,903 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:15,904 INFO L410 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] [2019-11-07 03:53:15,907 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:15,913 INFO L82 PathProgramCache]: Analyzing trace with hash 292547117, now seen corresponding path program 1 times [2019-11-07 03:53:15,924 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:15,925 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144497191] [2019-11-07 03:53:15,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 03:53:16,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144497191] [2019-11-07 03:53:16,540 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:16,540 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:16,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221215885] [2019-11-07 03:53:16,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:16,546 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:16,563 INFO L87 Difference]: Start difference. First operand 643 states. Second operand 3 states. [2019-11-07 03:53:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:16,827 INFO L93 Difference]: Finished difference Result 1789 states and 2156 transitions. [2019-11-07 03:53:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:16,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-11-07 03:53:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:16,868 INFO L225 Difference]: With dead ends: 1789 [2019-11-07 03:53:16,868 INFO L226 Difference]: Without dead ends: 1152 [2019-11-07 03:53:16,883 INFO L630 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 [2019-11-07 03:53:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2019-11-07 03:53:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1149. [2019-11-07 03:53:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-11-07 03:53:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1359 transitions. [2019-11-07 03:53:17,055 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1359 transitions. Word has length 54 [2019-11-07 03:53:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:17,056 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 1359 transitions. [2019-11-07 03:53:17,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1359 transitions. [2019-11-07 03:53:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 03:53:17,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:17,065 INFO L410 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] [2019-11-07 03:53:17,065 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1493337068, now seen corresponding path program 1 times [2019-11-07 03:53:17,066 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:17,066 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175523758] [2019-11-07 03:53:17,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 03:53:17,258 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175523758] [2019-11-07 03:53:17,258 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:17,258 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:17,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946717374] [2019-11-07 03:53:17,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:17,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:17,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:17,263 INFO L87 Difference]: Start difference. First operand 1149 states and 1359 transitions. Second operand 3 states. [2019-11-07 03:53:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:17,410 INFO L93 Difference]: Finished difference Result 2223 states and 2640 transitions. [2019-11-07 03:53:17,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:17,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-11-07 03:53:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:17,430 INFO L225 Difference]: With dead ends: 2223 [2019-11-07 03:53:17,430 INFO L226 Difference]: Without dead ends: 2207 [2019-11-07 03:53:17,433 INFO L630 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 [2019-11-07 03:53:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2019-11-07 03:53:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2019-11-07 03:53:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2207 states. [2019-11-07 03:53:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2620 transitions. [2019-11-07 03:53:17,588 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2620 transitions. Word has length 57 [2019-11-07 03:53:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:17,589 INFO L462 AbstractCegarLoop]: Abstraction has 2207 states and 2620 transitions. [2019-11-07 03:53:17,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2620 transitions. [2019-11-07 03:53:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 03:53:17,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:17,605 INFO L410 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] [2019-11-07 03:53:17,606 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1430438193, now seen corresponding path program 1 times [2019-11-07 03:53:17,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:17,606 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830792382] [2019-11-07 03:53:17,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 03:53:17,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830792382] [2019-11-07 03:53:17,817 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:17,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:17,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441469110] [2019-11-07 03:53:17,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:17,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:17,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:17,820 INFO L87 Difference]: Start difference. First operand 2207 states and 2620 transitions. Second operand 3 states. [2019-11-07 03:53:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:18,049 INFO L93 Difference]: Finished difference Result 6234 states and 7389 transitions. [2019-11-07 03:53:18,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:18,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-11-07 03:53:18,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:18,073 INFO L225 Difference]: With dead ends: 6234 [2019-11-07 03:53:18,073 INFO L226 Difference]: Without dead ends: 4048 [2019-11-07 03:53:18,081 INFO L630 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 [2019-11-07 03:53:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2019-11-07 03:53:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4033. [2019-11-07 03:53:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4033 states. [2019-11-07 03:53:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4775 transitions. [2019-11-07 03:53:18,261 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4775 transitions. Word has length 129 [2019-11-07 03:53:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:18,261 INFO L462 AbstractCegarLoop]: Abstraction has 4033 states and 4775 transitions. [2019-11-07 03:53:18,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4775 transitions. [2019-11-07 03:53:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 03:53:18,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:18,269 INFO L410 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] [2019-11-07 03:53:18,269 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1994225214, now seen corresponding path program 1 times [2019-11-07 03:53:18,270 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:18,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196610863] [2019-11-07 03:53:18,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 03:53:18,504 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196610863] [2019-11-07 03:53:18,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:18,504 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 03:53:18,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911749197] [2019-11-07 03:53:18,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:53:18,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:18,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:53:18,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:53:18,507 INFO L87 Difference]: Start difference. First operand 4033 states and 4775 transitions. Second operand 5 states. [2019-11-07 03:53:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:18,856 INFO L93 Difference]: Finished difference Result 8064 states and 9551 transitions. [2019-11-07 03:53:18,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:53:18,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2019-11-07 03:53:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:18,888 INFO L225 Difference]: With dead ends: 8064 [2019-11-07 03:53:18,888 INFO L226 Difference]: Without dead ends: 4048 [2019-11-07 03:53:18,900 INFO L630 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 [2019-11-07 03:53:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2019-11-07 03:53:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 4040. [2019-11-07 03:53:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4040 states. [2019-11-07 03:53:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 4780 transitions. [2019-11-07 03:53:19,121 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 4780 transitions. Word has length 168 [2019-11-07 03:53:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:19,122 INFO L462 AbstractCegarLoop]: Abstraction has 4040 states and 4780 transitions. [2019-11-07 03:53:19,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:53:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 4780 transitions. [2019-11-07 03:53:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 03:53:19,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:19,135 INFO L410 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] [2019-11-07 03:53:19,135 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:19,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1782482205, now seen corresponding path program 1 times [2019-11-07 03:53:19,136 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:19,136 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720225933] [2019-11-07 03:53:19,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 03:53:19,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720225933] [2019-11-07 03:53:19,559 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596256562] [2019-11-07 03:53:19,559 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 [2019-11-07 03:53:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:20,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 03:53:20,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:53:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 03:53:20,441 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:53:20,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:20,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 03:53:20,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 03:53:20,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2019-11-07 03:53:20,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754755174] [2019-11-07 03:53:20,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:53:20,907 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:20,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:53:20,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-07 03:53:20,909 INFO L87 Difference]: Start difference. First operand 4040 states and 4780 transitions. Second operand 6 states. [2019-11-07 03:53:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:21,189 INFO L93 Difference]: Finished difference Result 8067 states and 9548 transitions. [2019-11-07 03:53:21,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 03:53:21,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2019-11-07 03:53:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:21,213 INFO L225 Difference]: With dead ends: 8067 [2019-11-07 03:53:21,213 INFO L226 Difference]: Without dead ends: 4041 [2019-11-07 03:53:21,226 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-11-07 03:53:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2019-11-07 03:53:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 4041. [2019-11-07 03:53:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4041 states. [2019-11-07 03:53:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 4781 transitions. [2019-11-07 03:53:21,409 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 4781 transitions. Word has length 172 [2019-11-07 03:53:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:21,410 INFO L462 AbstractCegarLoop]: Abstraction has 4041 states and 4781 transitions. [2019-11-07 03:53:21,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:53:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 4781 transitions. [2019-11-07 03:53:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 03:53:21,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:21,421 INFO L410 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] [2019-11-07 03:53:21,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:53:21,638 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:21,639 INFO L82 PathProgramCache]: Analyzing trace with hash 722073599, now seen corresponding path program 1 times [2019-11-07 03:53:21,639 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:21,639 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486917348] [2019-11-07 03:53:21,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 03:53:22,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486917348] [2019-11-07 03:53:22,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733608465] [2019-11-07 03:53:22,015 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 [2019-11-07 03:53:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:22,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 03:53:22,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:53:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 03:53:22,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:53:22,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:23,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:23,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:23,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:27,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 03:53:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 03:53:27,185 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2005047086] [2019-11-07 03:53:27,222 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2019-11-07 03:53:27,222 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:53:27,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:53:27,235 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:53:27,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:53:27,966 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-11-07 03:53:28,962 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-07 03:53:29,115 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-07 03:53:29,224 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-07 03:53:29,420 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-11-07 03:53:29,624 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-11-07 03:53:29,817 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 510 [2019-11-07 03:53:29,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 133 for LOIs [2019-11-07 03:53:29,850 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 526 for LOIs [2019-11-07 03:53:31,509 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:31,765 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 728 [2019-11-07 03:53:32,286 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-11-07 03:53:33,219 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:33,449 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-11-07 03:53:33,969 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 724 [2019-11-07 03:53:34,118 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 03:53:34,249 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 03:53:34,416 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 610 [2019-11-07 03:53:34,717 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 610 [2019-11-07 03:53:35,442 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:35,591 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 624 [2019-11-07 03:53:35,932 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-07 03:53:36,066 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 642 [2019-11-07 03:53:36,524 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-07 03:53:36,650 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-11-07 03:53:37,377 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:37,502 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 624 [2019-11-07 03:53:37,830 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-07 03:53:38,000 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 642 [2019-11-07 03:53:38,495 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-07 03:53:38,704 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 561 [2019-11-07 03:53:38,860 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:38,973 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:39,167 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-11-07 03:53:39,367 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:39,484 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:39,643 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-11-07 03:53:39,846 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:39,959 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:40,097 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-11-07 03:53:40,237 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:40,352 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:40,540 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 615 [2019-11-07 03:53:41,246 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:41,479 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 638 [2019-11-07 03:53:41,874 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-07 03:53:42,024 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 656 [2019-11-07 03:53:42,454 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-07 03:53:42,579 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 03:53:43,019 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 611 [2019-11-07 03:53:43,763 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2019-11-07 03:53:44,034 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 638