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 0.1.24-13a467a-m [2019-10-15 01:02:38,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:02:38,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:02:38,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:02:38,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:02:38,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:02:38,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:02:38,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:02:38,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:02:38,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:02:38,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:02:38,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:02:38,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:02:38,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:02:38,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:02:38,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:02:38,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:02:38,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:02:38,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:02:38,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:02:38,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:02:38,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:02:38,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:02:38,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:02:38,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:02:38,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:02:38,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:02:38,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:02:38,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:02:38,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:02:38,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:02:38,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:02:38,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:02:38,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:02:38,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:02:38,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:02:38,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:02:38,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:02:38,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:02:38,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:02:38,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:02:38,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:02:38,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:02:38,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:02:38,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:02:38,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:02:38,269 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:02:38,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:02:38,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:02:38,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:02:38,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:02:38,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:02:38,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:02:38,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:02:38,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:02:38,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:02:38,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:02:38,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:02:38,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:02:38,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:02:38,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:02:38,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:02:38,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:02:38,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:02:38,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:02:38,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:02:38,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:02:38,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:02:38,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:02:38,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:02:38,274 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 [2019-10-15 01:02:38,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:02:38,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:02:38,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:02:38,618 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:02:38,618 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:02:38,619 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:38,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74fdf85c3/11e59d90e84a46e48e477473b7d586a2/FLAG39652fd79 [2019-10-15 01:02:39,456 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:02:39,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:39,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74fdf85c3/11e59d90e84a46e48e477473b7d586a2/FLAG39652fd79 [2019-10-15 01:02:39,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74fdf85c3/11e59d90e84a46e48e477473b7d586a2 [2019-10-15 01:02:39,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:02:39,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:02:39,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:39,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:02:39,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:02:39,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:39" (1/1) ... [2019-10-15 01:02:39,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357ac013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:39, skipping insertion in model container [2019-10-15 01:02:39,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:39" (1/1) ... [2019-10-15 01:02:39,585 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:02:39,697 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:02:40,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:41,022 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:02:41,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:41,441 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:02:41,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41 WrapperNode [2019-10-15 01:02:41,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:41,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:02:41,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:02:41,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:02:41,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... [2019-10-15 01:02:41,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:02:41,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:02:41,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:02:41,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:02:41,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:02:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:02:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:02:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 01:02:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-15 01:02:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 01:02:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-10-15 01:02:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-15 01:02:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-10-15 01:02:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-10-15 01:02:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 01:02:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-15 01:02:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2019-10-15 01:02:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2019-10-15 01:02:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 01:02:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2019-10-15 01:02:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2019-10-15 01:02:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2019-10-15 01:02:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2019-10-15 01:02:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 01:02:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 01:02:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 01:02:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 01:02:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 01:02:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 01:02:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 01:02:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 01:02:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 01:02:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 01:02:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 01:02:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-10-15 01:02:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-10-15 01:02:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-10-15 01:02:41,803 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2019-10-15 01:02:41,804 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2019-10-15 01:02:41,804 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2019-10-15 01:02:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2019-10-15 01:02:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2019-10-15 01:02:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2019-10-15 01:02:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2019-10-15 01:02:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2019-10-15 01:02:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2019-10-15 01:02:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2019-10-15 01:02:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2019-10-15 01:02:41,807 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2019-10-15 01:02:41,807 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2019-10-15 01:02:41,807 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2019-10-15 01:02:41,807 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-15 01:02:41,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2019-10-15 01:02:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2019-10-15 01:02:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2019-10-15 01:02:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:02:41,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-10-15 01:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-15 01:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-15 01:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2019-10-15 01:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 01:02:41,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 01:02:41,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 01:02:41,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 01:02:41,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 01:02:41,810 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2019-10-15 01:02:41,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2019-10-15 01:02:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2019-10-15 01:02:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2019-10-15 01:02:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 01:02:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-15 01:02:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-15 01:02:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2019-10-15 01:02:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2019-10-15 01:02:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2019-10-15 01:02:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2019-10-15 01:02:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2019-10-15 01:02:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-10-15 01:02:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2019-10-15 01:02:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2019-10-15 01:02:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2019-10-15 01:02:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2019-10-15 01:02:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2019-10-15 01:02:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2019-10-15 01:02:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2019-10-15 01:02:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2019-10-15 01:02:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2019-10-15 01:02:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2019-10-15 01:02:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2019-10-15 01:02:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2019-10-15 01:02:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2019-10-15 01:02:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2019-10-15 01:02:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2019-10-15 01:02:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2019-10-15 01:02:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2019-10-15 01:02:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 01:02:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-15 01:02:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2019-10-15 01:02:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2019-10-15 01:02:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2019-10-15 01:02:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2019-10-15 01:02:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 01:02:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2019-10-15 01:02:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2019-10-15 01:02:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2019-10-15 01:02:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2019-10-15 01:02:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2019-10-15 01:02:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-10-15 01:02:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2019-10-15 01:02:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2019-10-15 01:02:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2019-10-15 01:02:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2019-10-15 01:02:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2019-10-15 01:02:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2019-10-15 01:02:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 01:02:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 01:02:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 01:02:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 01:02:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:02:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 01:02:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-10-15 01:02:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 01:02:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-15 01:02:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-10-15 01:02:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 01:02:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-10-15 01:02:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-15 01:02:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-15 01:02:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-15 01:02:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:02:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-15 01:02:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-10-15 01:02:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:02:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-15 01:02:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-10-15 01:02:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 01:02:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-15 01:02:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-15 01:02:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 01:02:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-15 01:02:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2019-10-15 01:02:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2019-10-15 01:02:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2019-10-15 01:02:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2019-10-15 01:02:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2019-10-15 01:02:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2019-10-15 01:02:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:02:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 01:02:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2019-10-15 01:02:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2019-10-15 01:02:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2019-10-15 01:02:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2019-10-15 01:02:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2019-10-15 01:02:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2019-10-15 01:02:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2019-10-15 01:02:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2019-10-15 01:02:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2019-10-15 01:02:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2019-10-15 01:02:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2019-10-15 01:02:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2019-10-15 01:02:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2019-10-15 01:02:41,855 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2019-10-15 01:02:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-10-15 01:02:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2019-10-15 01:02:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2019-10-15 01:02:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2019-10-15 01:02:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2019-10-15 01:02:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2019-10-15 01:02:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2019-10-15 01:02:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2019-10-15 01:02:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2019-10-15 01:02:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2019-10-15 01:02:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2019-10-15 01:02:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2019-10-15 01:02:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2019-10-15 01:02:41,858 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2019-10-15 01:02:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2019-10-15 01:02:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2019-10-15 01:02:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2019-10-15 01:02:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2019-10-15 01:02:41,859 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2019-10-15 01:02:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:02:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:02:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:02:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 01:02:41,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:02:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 01:02:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:02:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 01:02:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:02:41,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 01:02:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 01:02:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 01:02:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 01:02:41,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 01:02:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 01:02:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 01:02:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 01:02:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 01:02:41,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2019-10-15 01:02:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 01:02:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 01:02:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 01:02:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 01:02:41,864 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 01:02:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 01:02:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2019-10-15 01:02:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2019-10-15 01:02:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-10-15 01:02:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-10-15 01:02:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-10-15 01:02:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-10-15 01:02:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2019-10-15 01:02:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2019-10-15 01:02:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2019-10-15 01:02:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2019-10-15 01:02:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2019-10-15 01:02:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2019-10-15 01:02:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2019-10-15 01:02:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2019-10-15 01:02:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2019-10-15 01:02:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-15 01:02:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2019-10-15 01:02:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:02:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-15 01:02:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:02:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2019-10-15 01:02:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2019-10-15 01:02:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2019-10-15 01:02:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2019-10-15 01:02:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2019-10-15 01:02:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2019-10-15 01:02:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2019-10-15 01:02:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2019-10-15 01:02:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2019-10-15 01:02:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 01:02:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2019-10-15 01:02:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-15 01:02:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 01:02:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:02:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:02:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:02:43,030 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 01:02:44,306 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:02:44,307 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:02:44,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:44 BoogieIcfgContainer [2019-10-15 01:02:44,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:02:44,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:02:44,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:02:44,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:02:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:02:39" (1/3) ... [2019-10-15 01:02:44,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea24df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:44, skipping insertion in model container [2019-10-15 01:02:44,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:41" (2/3) ... [2019-10-15 01:02:44,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea24df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:44, skipping insertion in model container [2019-10-15 01:02:44,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:44" (3/3) ... [2019-10-15 01:02:44,324 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:44,336 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:02:44,350 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:02:44,364 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:02:44,409 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:02:44,409 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:02:44,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:02:44,410 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:02:44,410 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:02:44,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:02:44,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:02:44,463 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:02:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2019-10-15 01:02:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-15 01:02:44,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:44,528 INFO L380 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] [2019-10-15 01:02:44,531 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2089942264, now seen corresponding path program 1 times [2019-10-15 01:02:44,550 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:44,550 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788327383] [2019-10-15 01:02:44,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:44,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:44,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:02:45,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788327383] [2019-10-15 01:02:45,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:45,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:45,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594883371] [2019-10-15 01:02:45,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:45,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:45,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:45,058 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 3 states. [2019-10-15 01:02:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:45,297 INFO L93 Difference]: Finished difference Result 2165 states and 2607 transitions. [2019-10-15 01:02:45,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:45,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-10-15 01:02:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:45,351 INFO L225 Difference]: With dead ends: 2165 [2019-10-15 01:02:45,351 INFO L226 Difference]: Without dead ends: 1399 [2019-10-15 01:02:45,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-10-15 01:02:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1396. [2019-10-15 01:02:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2019-10-15 01:02:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1656 transitions. [2019-10-15 01:02:45,581 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1656 transitions. Word has length 63 [2019-10-15 01:02:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:45,581 INFO L462 AbstractCegarLoop]: Abstraction has 1396 states and 1656 transitions. [2019-10-15 01:02:45,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1656 transitions. [2019-10-15 01:02:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-15 01:02:45,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:45,594 INFO L380 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] [2019-10-15 01:02:45,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:45,595 INFO L82 PathProgramCache]: Analyzing trace with hash 877528209, now seen corresponding path program 1 times [2019-10-15 01:02:45,595 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:45,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256263734] [2019-10-15 01:02:45,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:45,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:45,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:02:45,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256263734] [2019-10-15 01:02:45,789 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:45,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:45,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962419928] [2019-10-15 01:02:45,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:45,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:45,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:45,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:45,793 INFO L87 Difference]: Start difference. First operand 1396 states and 1656 transitions. Second operand 3 states. [2019-10-15 01:02:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:45,926 INFO L93 Difference]: Finished difference Result 2740 states and 3269 transitions. [2019-10-15 01:02:45,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:45,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-10-15 01:02:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:45,946 INFO L225 Difference]: With dead ends: 2740 [2019-10-15 01:02:45,947 INFO L226 Difference]: Without dead ends: 2722 [2019-10-15 01:02:45,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2019-10-15 01:02:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2722. [2019-10-15 01:02:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2019-10-15 01:02:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3247 transitions. [2019-10-15 01:02:46,154 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3247 transitions. Word has length 65 [2019-10-15 01:02:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:46,156 INFO L462 AbstractCegarLoop]: Abstraction has 2722 states and 3247 transitions. [2019-10-15 01:02:46,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3247 transitions. [2019-10-15 01:02:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 01:02:46,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:46,168 INFO L380 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] [2019-10-15 01:02:46,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:46,169 INFO L82 PathProgramCache]: Analyzing trace with hash 40969385, now seen corresponding path program 1 times [2019-10-15 01:02:46,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:46,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253359343] [2019-10-15 01:02:46,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:46,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:46,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 01:02:46,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253359343] [2019-10-15 01:02:46,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:46,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:46,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880063619] [2019-10-15 01:02:46,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:46,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:46,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:46,361 INFO L87 Difference]: Start difference. First operand 2722 states and 3247 transitions. Second operand 3 states. [2019-10-15 01:02:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:46,545 INFO L93 Difference]: Finished difference Result 7677 states and 9144 transitions. [2019-10-15 01:02:46,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:46,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2019-10-15 01:02:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:46,574 INFO L225 Difference]: With dead ends: 7677 [2019-10-15 01:02:46,574 INFO L226 Difference]: Without dead ends: 4979 [2019-10-15 01:02:46,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2019-10-15 01:02:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4962. [2019-10-15 01:02:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2019-10-15 01:02:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 5904 transitions. [2019-10-15 01:02:46,922 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 5904 transitions. Word has length 151 [2019-10-15 01:02:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:46,923 INFO L462 AbstractCegarLoop]: Abstraction has 4962 states and 5904 transitions. [2019-10-15 01:02:46,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 5904 transitions. [2019-10-15 01:02:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-15 01:02:46,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:46,932 INFO L380 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] [2019-10-15 01:02:46,932 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash 923882740, now seen corresponding path program 1 times [2019-10-15 01:02:46,933 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:46,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810436696] [2019-10-15 01:02:46,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:46,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:46,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-15 01:02:47,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810436696] [2019-10-15 01:02:47,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:47,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:02:47,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523255422] [2019-10-15 01:02:47,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:02:47,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:02:47,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:47,177 INFO L87 Difference]: Start difference. First operand 4962 states and 5904 transitions. Second operand 5 states. [2019-10-15 01:02:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:47,392 INFO L93 Difference]: Finished difference Result 9917 states and 11804 transitions. [2019-10-15 01:02:47,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:02:47,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2019-10-15 01:02:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:47,422 INFO L225 Difference]: With dead ends: 9917 [2019-10-15 01:02:47,422 INFO L226 Difference]: Without dead ends: 4977 [2019-10-15 01:02:47,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:02:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-15 01:02:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4969. [2019-10-15 01:02:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2019-10-15 01:02:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 5909 transitions. [2019-10-15 01:02:47,781 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 5909 transitions. Word has length 198 [2019-10-15 01:02:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:47,782 INFO L462 AbstractCegarLoop]: Abstraction has 4969 states and 5909 transitions. [2019-10-15 01:02:47,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:02:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 5909 transitions. [2019-10-15 01:02:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:02:47,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:47,791 INFO L380 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] [2019-10-15 01:02:47,792 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:47,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1306026342, now seen corresponding path program 1 times [2019-10-15 01:02:47,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:47,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100424743] [2019-10-15 01:02:47,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:47,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:47,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 01:02:48,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100424743] [2019-10-15 01:02:48,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:48,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:02:48,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121737630] [2019-10-15 01:02:48,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:02:48,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:02:48,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:02:48,132 INFO L87 Difference]: Start difference. First operand 4969 states and 5909 transitions. Second operand 6 states. [2019-10-15 01:02:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:48,350 INFO L93 Difference]: Finished difference Result 9915 states and 11796 transitions. [2019-10-15 01:02:48,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:02:48,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-10-15 01:02:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:48,380 INFO L225 Difference]: With dead ends: 9915 [2019-10-15 01:02:48,380 INFO L226 Difference]: Without dead ends: 4977 [2019-10-15 01:02:48,396 INFO L600 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 [2019-10-15 01:02:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-15 01:02:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-10-15 01:02:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-10-15 01:02:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5918 transitions. [2019-10-15 01:02:48,734 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5918 transitions. Word has length 203 [2019-10-15 01:02:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:48,734 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5918 transitions. [2019-10-15 01:02:48,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:02:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5918 transitions. [2019-10-15 01:02:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:02:48,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:48,746 INFO L380 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] [2019-10-15 01:02:48,746 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1783770383, now seen corresponding path program 1 times [2019-10-15 01:02:48,748 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:48,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519317424] [2019-10-15 01:02:48,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:48,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:48,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:02:49,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519317424] [2019-10-15 01:02:49,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420838363] [2019-10-15 01:02:49,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:02:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:49,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:02:49,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:02:49,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:02:50,145 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:02:50,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:50,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:02:50,620 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:02:50,620 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2019-10-15 01:02:50,620 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119136094] [2019-10-15 01:02:50,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:02:50,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:50,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:02:50,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:02:50,623 INFO L87 Difference]: Start difference. First operand 4977 states and 5918 transitions. Second operand 6 states. [2019-10-15 01:02:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:50,820 INFO L93 Difference]: Finished difference Result 9932 states and 11812 transitions. [2019-10-15 01:02:50,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:02:50,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2019-10-15 01:02:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:50,848 INFO L225 Difference]: With dead ends: 9932 [2019-10-15 01:02:50,848 INFO L226 Difference]: Without dead ends: 4975 [2019-10-15 01:02:50,865 INFO L600 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 [2019-10-15 01:02:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2019-10-15 01:02:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4975. [2019-10-15 01:02:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2019-10-15 01:02:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 5915 transitions. [2019-10-15 01:02:51,066 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 5915 transitions. Word has length 204 [2019-10-15 01:02:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:51,067 INFO L462 AbstractCegarLoop]: Abstraction has 4975 states and 5915 transitions. [2019-10-15 01:02:51,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:02:51,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 5915 transitions. [2019-10-15 01:02:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:02:51,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:51,078 INFO L380 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] [2019-10-15 01:02:51,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:02:51,294 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash 710223910, now seen corresponding path program 2 times [2019-10-15 01:02:51,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:51,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962416934] [2019-10-15 01:02:51,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:02:51,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962416934] [2019-10-15 01:02:51,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910345080] [2019-10-15 01:02:51,664 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 [2019-10-15 01:02:52,409 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 01:02:52,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:02:52,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:02:52,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:02:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:02:52,534 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:02:52,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:52,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:52,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:52,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:55,001 WARN L191 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-15 01:02:55,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:02:56,922 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 38 [2019-10-15 01:02:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:02:56,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1404906333] [2019-10-15 01:02:57,002 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:02:57,004 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:02:57,004 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:02:57,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2019-10-15 01:02:57,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330695499] [2019-10-15 01:02:57,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:02:57,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:57,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:02:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:02:57,007 INFO L87 Difference]: Start difference. First operand 4975 states and 5915 transitions. Second operand 16 states. [2019-10-15 01:02:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:57,335 INFO L93 Difference]: Finished difference Result 9934 states and 11815 transitions. [2019-10-15 01:02:57,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:02:57,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-10-15 01:02:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:57,372 INFO L225 Difference]: With dead ends: 9934 [2019-10-15 01:02:57,373 INFO L226 Difference]: Without dead ends: 4976 [2019-10-15 01:02:57,388 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:02:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2019-10-15 01:02:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2019-10-15 01:02:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2019-10-15 01:02:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 5916 transitions. [2019-10-15 01:02:57,551 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 5916 transitions. Word has length 205 [2019-10-15 01:02:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:57,552 INFO L462 AbstractCegarLoop]: Abstraction has 4976 states and 5916 transitions. [2019-10-15 01:02:57,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:02:57,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 5916 transitions. [2019-10-15 01:02:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 01:02:57,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:57,568 INFO L380 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] [2019-10-15 01:02:57,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:02:57,779 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash -392245338, now seen corresponding path program 3 times [2019-10-15 01:02:57,780 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:57,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621576756] [2019-10-15 01:02:57,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:02:58,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621576756] [2019-10-15 01:02:58,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061331719] [2019-10-15 01:02:58,070 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 [2019-10-15 01:02:58,594 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:02:58,594 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:02:58,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 01:02:58,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:02:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:02:58,742 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:02:59,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:59,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:59,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:02:59,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:06,807 WARN L191 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-15 01:03:06,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:03:06,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:03:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:03:07,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [422846841] [2019-10-15 01:03:07,026 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:03:07,026 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:03:07,027 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:03:07,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2019-10-15 01:03:07,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156917761] [2019-10-15 01:03:07,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:03:07,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:07,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:03:07,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:03:07,030 INFO L87 Difference]: Start difference. First operand 4976 states and 5916 transitions. Second operand 19 states. [2019-10-15 01:03:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:07,425 INFO L93 Difference]: Finished difference Result 9936 states and 11817 transitions. [2019-10-15 01:03:07,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:03:07,426 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2019-10-15 01:03:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:07,447 INFO L225 Difference]: With dead ends: 9936 [2019-10-15 01:03:07,447 INFO L226 Difference]: Without dead ends: 4977 [2019-10-15 01:03:07,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 401 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:03:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-15 01:03:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-10-15 01:03:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-10-15 01:03:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5917 transitions. [2019-10-15 01:03:07,616 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5917 transitions. Word has length 207 [2019-10-15 01:03:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:07,617 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5917 transitions. [2019-10-15 01:03:07,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:03:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5917 transitions. [2019-10-15 01:03:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-15 01:03:07,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:07,630 INFO L380 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] [2019-10-15 01:03:07,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:07,839 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash -374661530, now seen corresponding path program 4 times [2019-10-15 01:03:07,840 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:07,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593314774] [2019-10-15 01:03:07,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:07,840 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:07,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:03:08,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593314774] [2019-10-15 01:03:08,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060839874] [2019-10-15 01:03:08,227 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 [2019-10-15 01:03:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:08,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:03:08,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:03:08,860 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:09,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:09,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:09,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:09,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:11,367 WARN L191 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-15 01:03:11,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:03:13,337 WARN L191 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 39 [2019-10-15 01:03:15,386 WARN L191 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 39 [2019-10-15 01:03:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:03:15,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1706026442] [2019-10-15 01:03:15,463 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:03:15,464 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:03:15,464 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:03:15,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2019-10-15 01:03:15,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175112919] [2019-10-15 01:03:15,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:03:15,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:15,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:03:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:03:15,467 INFO L87 Difference]: Start difference. First operand 4977 states and 5917 transitions. Second operand 18 states.