/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -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 00:29:39,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:29:39,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:29:39,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:29:39,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:29:39,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:29:39,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:29:39,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:29:39,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:29:39,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:29:39,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:29:39,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:29:39,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:29:39,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:29:39,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:29:39,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:29:39,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:29:39,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:29:39,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:29:39,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:29:39,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:29:39,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:29:39,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:29:39,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:29:39,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:29:39,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:29:39,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:29:39,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:29:39,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:29:39,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:29:39,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:29:39,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:29:39,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:29:39,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:29:39,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:29:39,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:29:39,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:29:39,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:29:39,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:29:39,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:29:39,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:29:39,730 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 00:29:39,764 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:29:39,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:29:39,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:29:39,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:29:39,769 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:29:39,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:29:39,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:29:39,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:29:39,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:29:39,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:29:39,771 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:29:39,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:29:39,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:29:39,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:29:39,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:29:39,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:29:39,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:29:39,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:29:39,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:29:39,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:29:39,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:29:39,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:29:39,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:29:39,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:29:40,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:29:40,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:29:40,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:29:40,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:29:40,109 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:29:40,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 00:29:40,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcb7ab5/53546b19ac554bae8dc497ee915875e6/FLAG703e1a9c2 [2019-11-07 00:29:40,991 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:29:40,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 00:29:41,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcb7ab5/53546b19ac554bae8dc497ee915875e6/FLAG703e1a9c2 [2019-11-07 00:29:41,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcb7ab5/53546b19ac554bae8dc497ee915875e6 [2019-11-07 00:29:41,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:29:41,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:29:41,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:29:41,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:29:41,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:29:41,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:41" (1/1) ... [2019-11-07 00:29:41,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ed32f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:41, skipping insertion in model container [2019-11-07 00:29:41,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:41" (1/1) ... [2019-11-07 00:29:41,106 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:29:41,212 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:29:42,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:29:42,549 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:29:42,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:29:42,962 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:29:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42 WrapperNode [2019-11-07 00:29:42,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:29:42,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:29:42,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:29:42,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:29:42,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:42,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (1/1) ... [2019-11-07 00:29:43,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:29:43,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:29:43,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:29:43,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:29:43,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (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 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-07 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-11-07 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 00:29:43,252 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-07 00:29:43,253 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2019-11-07 00:29:43,254 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2019-11-07 00:29:43,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 00:29:43,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 00:29:43,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 00:29:43,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 00:29:43,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 00:29:43,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 00:29:43,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 00:29:43,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 00:29:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 00:29:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 00:29:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2019-11-07 00:29:43,258 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2019-11-07 00:29:43,259 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2019-11-07 00:29:43,259 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2019-11-07 00:29:43,259 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2019-11-07 00:29:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:29:43,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 00:29:43,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 00:29:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 00:29:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2019-11-07 00:29:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2019-11-07 00:29:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2019-11-07 00:29:43,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 00:29:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2019-11-07 00:29:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2019-11-07 00:29:43,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2019-11-07 00:29:43,267 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 00:29:43,268 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2019-11-07 00:29:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2019-11-07 00:29:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 00:29:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 00:29:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 00:29:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-11-07 00:29:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-07 00:29:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2019-11-07 00:29:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2019-11-07 00:29:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2019-11-07 00:29:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2019-11-07 00:29:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2019-11-07 00:29:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2019-11-07 00:29:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:29:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:29:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 00:29:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 00:29:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-11-07 00:29:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2019-11-07 00:29:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:29:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2019-11-07 00:29:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 00:29:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 00:29:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:29:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:29:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:29:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:29:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:29:44,212 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 00:29:45,313 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:29:45,314 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 00:29:45,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:45 BoogieIcfgContainer [2019-11-07 00:29:45,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:29:45,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:29:45,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:29:45,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:29:45,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:29:41" (1/3) ... [2019-11-07 00:29:45,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34112b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:45, skipping insertion in model container [2019-11-07 00:29:45,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:42" (2/3) ... [2019-11-07 00:29:45,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34112b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:45, skipping insertion in model container [2019-11-07 00:29:45,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:45" (3/3) ... [2019-11-07 00:29:45,329 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 00:29:45,345 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:29:45,358 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:29:45,369 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:29:45,409 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:29:45,409 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:29:45,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:29:45,409 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:29:45,409 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:29:45,409 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:29:45,410 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:29:45,410 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:29:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2019-11-07 00:29:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-07 00:29:45,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:45,465 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:29:45,467 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2089942264, now seen corresponding path program 1 times [2019-11-07 00:29:45,481 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:45,482 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101533702] [2019-11-07 00:29:45,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 00:29:46,001 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101533702] [2019-11-07 00:29:46,002 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:29:46,002 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:29:46,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366499509] [2019-11-07 00:29:46,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:29:46,010 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:46,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:29:46,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:29:46,030 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 3 states. [2019-11-07 00:29:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:46,287 INFO L93 Difference]: Finished difference Result 2165 states and 2607 transitions. [2019-11-07 00:29:46,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:29:46,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-11-07 00:29:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:46,330 INFO L225 Difference]: With dead ends: 2165 [2019-11-07 00:29:46,330 INFO L226 Difference]: Without dead ends: 1399 [2019-11-07 00:29:46,344 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 00:29:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-11-07 00:29:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1396. [2019-11-07 00:29:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2019-11-07 00:29:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1656 transitions. [2019-11-07 00:29:46,542 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1656 transitions. Word has length 63 [2019-11-07 00:29:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:46,542 INFO L462 AbstractCegarLoop]: Abstraction has 1396 states and 1656 transitions. [2019-11-07 00:29:46,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:29:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1656 transitions. [2019-11-07 00:29:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-07 00:29:46,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:46,557 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:29:46,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash 877528209, now seen corresponding path program 1 times [2019-11-07 00:29:46,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:46,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981837459] [2019-11-07 00:29:46,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 00:29:46,784 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981837459] [2019-11-07 00:29:46,784 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:29:46,784 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:29:46,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837734276] [2019-11-07 00:29:46,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:29:46,789 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:29:46,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:29:46,790 INFO L87 Difference]: Start difference. First operand 1396 states and 1656 transitions. Second operand 3 states. [2019-11-07 00:29:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:46,918 INFO L93 Difference]: Finished difference Result 2740 states and 3269 transitions. [2019-11-07 00:29:46,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:29:46,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-11-07 00:29:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:46,938 INFO L225 Difference]: With dead ends: 2740 [2019-11-07 00:29:46,938 INFO L226 Difference]: Without dead ends: 2722 [2019-11-07 00:29:46,941 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 00:29:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2019-11-07 00:29:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2722. [2019-11-07 00:29:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2019-11-07 00:29:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3247 transitions. [2019-11-07 00:29:47,163 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3247 transitions. Word has length 65 [2019-11-07 00:29:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:47,164 INFO L462 AbstractCegarLoop]: Abstraction has 2722 states and 3247 transitions. [2019-11-07 00:29:47,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:29:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3247 transitions. [2019-11-07 00:29:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-07 00:29:47,176 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:47,177 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2019-11-07 00:29:47,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash 40969385, now seen corresponding path program 1 times [2019-11-07 00:29:47,178 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:47,178 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398769809] [2019-11-07 00:29:47,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 00:29:47,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398769809] [2019-11-07 00:29:47,399 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:29:47,399 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:29:47,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296571573] [2019-11-07 00:29:47,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:29:47,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:47,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:29:47,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:29:47,403 INFO L87 Difference]: Start difference. First operand 2722 states and 3247 transitions. Second operand 3 states. [2019-11-07 00:29:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:47,604 INFO L93 Difference]: Finished difference Result 7677 states and 9144 transitions. [2019-11-07 00:29:47,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:29:47,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2019-11-07 00:29:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:47,643 INFO L225 Difference]: With dead ends: 7677 [2019-11-07 00:29:47,643 INFO L226 Difference]: Without dead ends: 4979 [2019-11-07 00:29:47,654 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 00:29:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2019-11-07 00:29:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4962. [2019-11-07 00:29:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2019-11-07 00:29:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 5904 transitions. [2019-11-07 00:29:47,907 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 5904 transitions. Word has length 151 [2019-11-07 00:29:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:47,912 INFO L462 AbstractCegarLoop]: Abstraction has 4962 states and 5904 transitions. [2019-11-07 00:29:47,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:29:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 5904 transitions. [2019-11-07 00:29:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:29:47,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:47,928 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:29:47,928 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:47,930 INFO L82 PathProgramCache]: Analyzing trace with hash 923882740, now seen corresponding path program 1 times [2019-11-07 00:29:47,931 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:47,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618820313] [2019-11-07 00:29:47,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-07 00:29:48,367 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618820313] [2019-11-07 00:29:48,368 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:29:48,368 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:29:48,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063589136] [2019-11-07 00:29:48,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:29:48,369 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:48,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:29:48,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:29:48,370 INFO L87 Difference]: Start difference. First operand 4962 states and 5904 transitions. Second operand 5 states. [2019-11-07 00:29:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:48,608 INFO L93 Difference]: Finished difference Result 9917 states and 11804 transitions. [2019-11-07 00:29:48,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:29:48,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2019-11-07 00:29:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:48,640 INFO L225 Difference]: With dead ends: 9917 [2019-11-07 00:29:48,640 INFO L226 Difference]: Without dead ends: 4977 [2019-11-07 00:29:48,664 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 00:29:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-11-07 00:29:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4969. [2019-11-07 00:29:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2019-11-07 00:29:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 5909 transitions. [2019-11-07 00:29:48,917 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 5909 transitions. Word has length 198 [2019-11-07 00:29:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:48,918 INFO L462 AbstractCegarLoop]: Abstraction has 4969 states and 5909 transitions. [2019-11-07 00:29:48,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:29:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 5909 transitions. [2019-11-07 00:29:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:29:49,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:49,031 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:29:49,031 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1306026342, now seen corresponding path program 1 times [2019-11-07 00:29:49,032 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:49,032 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173202847] [2019-11-07 00:29:49,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 00:29:49,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173202847] [2019-11-07 00:29:49,278 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:29:49,279 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:29:49,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247020173] [2019-11-07 00:29:49,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:29:49,280 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:29:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:29:49,280 INFO L87 Difference]: Start difference. First operand 4969 states and 5909 transitions. Second operand 6 states. [2019-11-07 00:29:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:49,524 INFO L93 Difference]: Finished difference Result 9915 states and 11796 transitions. [2019-11-07 00:29:49,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:29:49,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-11-07 00:29:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:49,556 INFO L225 Difference]: With dead ends: 9915 [2019-11-07 00:29:49,556 INFO L226 Difference]: Without dead ends: 4977 [2019-11-07 00:29:49,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:29:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-11-07 00:29:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-11-07 00:29:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-11-07 00:29:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5918 transitions. [2019-11-07 00:29:49,782 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5918 transitions. Word has length 203 [2019-11-07 00:29:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:49,782 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5918 transitions. [2019-11-07 00:29:49,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:29:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5918 transitions. [2019-11-07 00:29:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:29:49,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:49,793 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:29:49,794 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:49,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:49,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1783770383, now seen corresponding path program 1 times [2019-11-07 00:29:49,794 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:49,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767589866] [2019-11-07 00:29:49,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:29:50,219 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767589866] [2019-11-07 00:29:50,219 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23031548] [2019-11-07 00:29:50,220 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 00:29:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:50,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 00:29:50,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:29:50,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:29:50,895 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:29:51,458 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 00:29:51,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:51,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:29:51,837 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:29:51,837 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2019-11-07 00:29:51,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257797462] [2019-11-07 00:29:51,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:29:51,838 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:51,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:29:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:29:51,839 INFO L87 Difference]: Start difference. First operand 4977 states and 5918 transitions. Second operand 6 states. [2019-11-07 00:29:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:52,063 INFO L93 Difference]: Finished difference Result 9932 states and 11812 transitions. [2019-11-07 00:29:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:29:52,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2019-11-07 00:29:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:52,091 INFO L225 Difference]: With dead ends: 9932 [2019-11-07 00:29:52,091 INFO L226 Difference]: Without dead ends: 4975 [2019-11-07 00:29:52,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 401 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:29:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2019-11-07 00:29:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4975. [2019-11-07 00:29:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2019-11-07 00:29:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 5915 transitions. [2019-11-07 00:29:52,340 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 5915 transitions. Word has length 204 [2019-11-07 00:29:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:52,341 INFO L462 AbstractCegarLoop]: Abstraction has 4975 states and 5915 transitions. [2019-11-07 00:29:52,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:29:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 5915 transitions. [2019-11-07 00:29:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:29:52,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:52,354 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:29:52,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:29:52,561 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash 710223910, now seen corresponding path program 2 times [2019-11-07 00:29:52,562 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:52,562 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120074341] [2019-11-07 00:29:52,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:29:52,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120074341] [2019-11-07 00:29:52,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715040968] [2019-11-07 00:29:52,916 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 00:29:53,599 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-07 00:29:53,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:29:53,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:29:53,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:29:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:29:53,725 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:29:53,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:54,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:54,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:54,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:29:56,160 WARN L191 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-07 00:29:56,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:29:58,278 WARN L191 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 38 [2019-11-07 00:29:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:29:58,350 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1050835278] [2019-11-07 00:29:58,355 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:29:58,356 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:29:58,357 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:29:58,357 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2019-11-07 00:29:58,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013221224] [2019-11-07 00:29:58,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:29:58,358 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:29:58,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:29:58,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:29:58,359 INFO L87 Difference]: Start difference. First operand 4975 states and 5915 transitions. Second operand 16 states. [2019-11-07 00:29:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:29:58,783 INFO L93 Difference]: Finished difference Result 9934 states and 11815 transitions. [2019-11-07 00:29:58,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:29:58,783 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-11-07 00:29:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:29:58,820 INFO L225 Difference]: With dead ends: 9934 [2019-11-07 00:29:58,820 INFO L226 Difference]: Without dead ends: 4976 [2019-11-07 00:29:58,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:29:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2019-11-07 00:29:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2019-11-07 00:29:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2019-11-07 00:29:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 5916 transitions. [2019-11-07 00:29:58,987 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 5916 transitions. Word has length 205 [2019-11-07 00:29:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:29:58,988 INFO L462 AbstractCegarLoop]: Abstraction has 4976 states and 5916 transitions. [2019-11-07 00:29:58,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:29:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 5916 transitions. [2019-11-07 00:29:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 00:29:59,000 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:29:59,000 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:29:59,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:29:59,209 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:29:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:29:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash -392245338, now seen corresponding path program 3 times [2019-11-07 00:29:59,210 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:29:59,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610484155] [2019-11-07 00:29:59,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:29:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:29:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 00:29:59,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610484155] [2019-11-07 00:29:59,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046945] [2019-11-07 00:29:59,496 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:29:59,946 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:29:59,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:29:59,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-07 00:29:59,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:30:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:30:00,095 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:30:00,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:00,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:00,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:00,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:04,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:30:06,838 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 38 [2019-11-07 00:30:06,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:30:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 00:30:07,018 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [984533161] [2019-11-07 00:30:07,018 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:30:07,018 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:30:07,018 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:30:07,018 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2019-11-07 00:30:07,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273044148] [2019-11-07 00:30:07,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:30:07,020 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:30:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:30:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:30:07,021 INFO L87 Difference]: Start difference. First operand 4976 states and 5916 transitions. Second operand 19 states. [2019-11-07 00:30:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:30:07,413 INFO L93 Difference]: Finished difference Result 9936 states and 11817 transitions. [2019-11-07 00:30:07,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:30:07,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2019-11-07 00:30:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:30:07,441 INFO L225 Difference]: With dead ends: 9936 [2019-11-07 00:30:07,442 INFO L226 Difference]: Without dead ends: 4977 [2019-11-07 00:30:07,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 401 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:30:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-11-07 00:30:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-11-07 00:30:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-11-07 00:30:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5917 transitions. [2019-11-07 00:30:07,660 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5917 transitions. Word has length 207 [2019-11-07 00:30:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:30:07,660 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5917 transitions. [2019-11-07 00:30:07,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:30:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5917 transitions. [2019-11-07 00:30:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:30:07,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:30:07,670 INFO L410 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:30:07,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:30:07,878 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:30:07,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:30:07,878 INFO L82 PathProgramCache]: Analyzing trace with hash -374661530, now seen corresponding path program 4 times [2019-11-07 00:30:07,879 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:30:07,879 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819836009] [2019-11-07 00:30:07,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:30:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:30:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 00:30:08,182 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819836009] [2019-11-07 00:30:08,183 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70354262] [2019-11-07 00:30:08,183 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:30:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:30:08,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 00:30:08,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:30:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-07 00:30:08,917 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:30:09,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:09,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:09,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:09,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:30:11,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:30:13,704 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 40 [2019-11-07 00:30:15,786 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 39 [2019-11-07 00:30:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 00:30:15,841 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [540626024] [2019-11-07 00:30:15,841 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:30:15,841 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:30:15,841 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:30:15,842 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2019-11-07 00:30:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138685483] [2019-11-07 00:30:15,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:30:15,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:30:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:30:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:30:15,845 INFO L87 Difference]: Start difference. First operand 4977 states and 5917 transitions. Second operand 18 states.