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-f4eb214f-m [2019-10-13 21:03:38,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:03:38,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:03:38,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:03:38,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:03:38,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:03:38,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:03:38,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:03:38,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:03:38,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:03:38,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:03:38,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:03:38,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:03:38,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:03:38,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:03:38,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:03:38,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:03:38,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:03:38,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:03:38,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:03:38,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:03:38,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:03:38,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:03:38,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:03:38,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:03:38,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:03:38,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:03:38,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:03:38,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:03:38,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:03:38,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:03:38,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:03:38,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:03:38,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:03:38,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:03:38,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:03:38,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:03:38,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:03:38,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:03:38,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:03:38,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:03:38,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:03:38,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:03:38,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:03:38,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:03:38,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:03:38,871 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:03:38,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:03:38,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:03:38,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:03:38,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:03:38,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:03:38,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:03:38,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:03:38,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:03:38,872 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:03:38,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:03:38,873 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:03:38,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:03:38,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:03:38,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:03:38,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:03:38,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:03:38,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:03:38,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:03:38,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:03:38,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:03:38,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:03:38,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:03:38,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:03:38,875 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 [2019-10-13 21:03:39,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:03:39,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:03:39,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:03:39,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:03:39,164 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:03:39,165 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:39,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56386f9e0/62d5c11149ef4ee7b230f0dca69227e2/FLAG8f63b017d [2019-10-13 21:03:39,998 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:03:39,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:40,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56386f9e0/62d5c11149ef4ee7b230f0dca69227e2/FLAG8f63b017d [2019-10-13 21:03:40,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56386f9e0/62d5c11149ef4ee7b230f0dca69227e2 [2019-10-13 21:03:40,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:03:40,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:03:40,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:40,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:03:40,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:03:40,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e8954d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40, skipping insertion in model container [2019-10-13 21:03:40,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:03:40,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:03:41,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:41,953 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:03:42,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:42,404 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:03:42,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42 WrapperNode [2019-10-13 21:03:42,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:42,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:03:42,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:03:42,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:03:42,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... [2019-10-13 21:03:42,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:03:42,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:03:42,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:03:42,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:03:42,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:03:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:03:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:03:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 21:03:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-13 21:03:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 21:03:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2019-10-13 21:03:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-13 21:03:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-10-13 21:03:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-10-13 21:03:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 21:03:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 21:03:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2019-10-13 21:03:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2019-10-13 21:03:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 21:03:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2019-10-13 21:03:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2019-10-13 21:03:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2019-10-13 21:03:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2019-10-13 21:03:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:03:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 21:03:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 21:03:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 21:03:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 21:03:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2019-10-13 21:03:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2019-10-13 21:03:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2019-10-13 21:03:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2019-10-13 21:03:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2019-10-13 21:03:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2019-10-13 21:03:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2019-10-13 21:03:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2019-10-13 21:03:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2019-10-13 21:03:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2019-10-13 21:03:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2019-10-13 21:03:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2019-10-13 21:03:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-13 21:03:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-13 21:03:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 21:03:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2019-10-13 21:03:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2019-10-13 21:03:42,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2019-10-13 21:03:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 21:03:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 21:03:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 21:03:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 21:03:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2019-10-13 21:03:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2019-10-13 21:03:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2019-10-13 21:03:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2019-10-13 21:03:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2019-10-13 21:03:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-10-13 21:03:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2019-10-13 21:03:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2019-10-13 21:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2019-10-13 21:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2019-10-13 21:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2019-10-13 21:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2019-10-13 21:03:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2019-10-13 21:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2019-10-13 21:03:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2019-10-13 21:03:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2019-10-13 21:03:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2019-10-13 21:03:42,751 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:03:42,752 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 21:03:42,753 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2019-10-13 21:03:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 21:03:42,755 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 21:03:42,756 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 21:03:42,756 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 21:03:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:03:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 21:03:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2019-10-13 21:03:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 21:03:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 21:03:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2019-10-13 21:03:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:03:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-13 21:03:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-10-13 21:03:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:03:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-13 21:03:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-10-13 21:03:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 21:03:42,761 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 21:03:42,764 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 21:03:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 21:03:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 21:03:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2019-10-13 21:03:42,765 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2019-10-13 21:03:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2019-10-13 21:03:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2019-10-13 21:03:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2019-10-13 21:03:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2019-10-13 21:03:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:03:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 21:03:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2019-10-13 21:03:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2019-10-13 21:03:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2019-10-13 21:03:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2019-10-13 21:03:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2019-10-13 21:03:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2019-10-13 21:03:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2019-10-13 21:03:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2019-10-13 21:03:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:03:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 21:03:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 21:03:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2019-10-13 21:03:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2019-10-13 21:03:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2019-10-13 21:03:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2019-10-13 21:03:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:03:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 21:03:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:03:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:03:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:03:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:03:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:03:43,971 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 21:03:45,020 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:03:45,020 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:03:45,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:45 BoogieIcfgContainer [2019-10-13 21:03:45,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:03:45,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:03:45,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:03:45,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:03:45,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:03:40" (1/3) ... [2019-10-13 21:03:45,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f31a911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:45, skipping insertion in model container [2019-10-13 21:03:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:42" (2/3) ... [2019-10-13 21:03:45,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f31a911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:45, skipping insertion in model container [2019-10-13 21:03:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:45" (3/3) ... [2019-10-13 21:03:45,033 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 [2019-10-13 21:03:45,046 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:03:45,060 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:03:45,073 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:03:45,154 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:03:45,154 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:03:45,154 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:03:45,154 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:03:45,155 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:03:45,155 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:03:45,155 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:03:45,155 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:03:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2019-10-13 21:03:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 21:03:45,201 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:45,202 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] [2019-10-13 21:03:45,204 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:45,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2089942264, now seen corresponding path program 1 times [2019-10-13 21:03:45,221 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:45,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898276835] [2019-10-13 21:03:45,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:45,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:45,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:03:45,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898276835] [2019-10-13 21:03:45,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:45,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:45,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17425338] [2019-10-13 21:03:45,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:45,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:45,720 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 3 states. [2019-10-13 21:03:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:45,940 INFO L93 Difference]: Finished difference Result 2165 states and 2607 transitions. [2019-10-13 21:03:45,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:45,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-10-13 21:03:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:45,993 INFO L225 Difference]: With dead ends: 2165 [2019-10-13 21:03:45,993 INFO L226 Difference]: Without dead ends: 1399 [2019-10-13 21:03:46,003 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 [2019-10-13 21:03:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-10-13 21:03:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1396. [2019-10-13 21:03:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2019-10-13 21:03:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1656 transitions. [2019-10-13 21:03:46,180 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1656 transitions. Word has length 63 [2019-10-13 21:03:46,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:46,181 INFO L462 AbstractCegarLoop]: Abstraction has 1396 states and 1656 transitions. [2019-10-13 21:03:46,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1656 transitions. [2019-10-13 21:03:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 21:03:46,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:46,186 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] [2019-10-13 21:03:46,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 877528209, now seen corresponding path program 1 times [2019-10-13 21:03:46,188 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:46,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922543012] [2019-10-13 21:03:46,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:46,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:46,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:03:46,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922543012] [2019-10-13 21:03:46,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:46,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:46,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535007602] [2019-10-13 21:03:46,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:46,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:46,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:46,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:46,457 INFO L87 Difference]: Start difference. First operand 1396 states and 1656 transitions. Second operand 3 states. [2019-10-13 21:03:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:46,574 INFO L93 Difference]: Finished difference Result 2740 states and 3269 transitions. [2019-10-13 21:03:46,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:46,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-10-13 21:03:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:46,604 INFO L225 Difference]: With dead ends: 2740 [2019-10-13 21:03:46,604 INFO L226 Difference]: Without dead ends: 2722 [2019-10-13 21:03:46,607 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 [2019-10-13 21:03:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2019-10-13 21:03:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2722. [2019-10-13 21:03:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2019-10-13 21:03:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3247 transitions. [2019-10-13 21:03:46,836 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3247 transitions. Word has length 65 [2019-10-13 21:03:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:46,837 INFO L462 AbstractCegarLoop]: Abstraction has 2722 states and 3247 transitions. [2019-10-13 21:03:46,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3247 transitions. [2019-10-13 21:03:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 21:03:46,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:46,849 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] [2019-10-13 21:03:46,850 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash 40969385, now seen corresponding path program 1 times [2019-10-13 21:03:46,850 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:46,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585567046] [2019-10-13 21:03:46,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:46,851 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:46,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 21:03:47,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585567046] [2019-10-13 21:03:47,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:47,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:47,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749881348] [2019-10-13 21:03:47,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:47,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:47,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:47,024 INFO L87 Difference]: Start difference. First operand 2722 states and 3247 transitions. Second operand 3 states. [2019-10-13 21:03:47,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:47,228 INFO L93 Difference]: Finished difference Result 7677 states and 9144 transitions. [2019-10-13 21:03:47,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:47,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2019-10-13 21:03:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:47,258 INFO L225 Difference]: With dead ends: 7677 [2019-10-13 21:03:47,258 INFO L226 Difference]: Without dead ends: 4979 [2019-10-13 21:03:47,269 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 [2019-10-13 21:03:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2019-10-13 21:03:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4962. [2019-10-13 21:03:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2019-10-13 21:03:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 5904 transitions. [2019-10-13 21:03:47,653 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 5904 transitions. Word has length 151 [2019-10-13 21:03:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:47,654 INFO L462 AbstractCegarLoop]: Abstraction has 4962 states and 5904 transitions. [2019-10-13 21:03:47,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 5904 transitions. [2019-10-13 21:03:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-13 21:03:47,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:47,664 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] [2019-10-13 21:03:47,664 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash 923882740, now seen corresponding path program 1 times [2019-10-13 21:03:47,665 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:47,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077897488] [2019-10-13 21:03:47,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:47,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:47,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 21:03:47,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077897488] [2019-10-13 21:03:47,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:47,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:03:47,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639960290] [2019-10-13 21:03:47,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:03:47,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:47,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:03:47,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:03:47,909 INFO L87 Difference]: Start difference. First operand 4962 states and 5904 transitions. Second operand 5 states. [2019-10-13 21:03:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:48,123 INFO L93 Difference]: Finished difference Result 9917 states and 11804 transitions. [2019-10-13 21:03:48,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:03:48,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2019-10-13 21:03:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:48,151 INFO L225 Difference]: With dead ends: 9917 [2019-10-13 21:03:48,151 INFO L226 Difference]: Without dead ends: 4977 [2019-10-13 21:03:48,167 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 [2019-10-13 21:03:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-13 21:03:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4969. [2019-10-13 21:03:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4969 states. [2019-10-13 21:03:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4969 states to 4969 states and 5909 transitions. [2019-10-13 21:03:48,626 INFO L78 Accepts]: Start accepts. Automaton has 4969 states and 5909 transitions. Word has length 198 [2019-10-13 21:03:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:48,626 INFO L462 AbstractCegarLoop]: Abstraction has 4969 states and 5909 transitions. [2019-10-13 21:03:48,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:03:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4969 states and 5909 transitions. [2019-10-13 21:03:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:03:48,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:48,638 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] [2019-10-13 21:03:48,639 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:48,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1306026342, now seen corresponding path program 1 times [2019-10-13 21:03:48,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:48,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745522410] [2019-10-13 21:03:48,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:48,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:48,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:03:48,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745522410] [2019-10-13 21:03:48,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:48,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:03:48,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609036714] [2019-10-13 21:03:48,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:03:48,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:48,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:03:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:03:48,964 INFO L87 Difference]: Start difference. First operand 4969 states and 5909 transitions. Second operand 6 states. [2019-10-13 21:03:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:49,196 INFO L93 Difference]: Finished difference Result 9915 states and 11796 transitions. [2019-10-13 21:03:49,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:03:49,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-10-13 21:03:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:49,225 INFO L225 Difference]: With dead ends: 9915 [2019-10-13 21:03:49,225 INFO L226 Difference]: Without dead ends: 4977 [2019-10-13 21:03:49,241 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 [2019-10-13 21:03:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-13 21:03:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-10-13 21:03:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-10-13 21:03:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5918 transitions. [2019-10-13 21:03:49,595 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5918 transitions. Word has length 203 [2019-10-13 21:03:49,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:49,597 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5918 transitions. [2019-10-13 21:03:49,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:03:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5918 transitions. [2019-10-13 21:03:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:03:49,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:49,611 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] [2019-10-13 21:03:49,611 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1783770383, now seen corresponding path program 1 times [2019-10-13 21:03:49,612 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:49,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020713064] [2019-10-13 21:03:49,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:49,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:49,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:03:49,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020713064] [2019-10-13 21:03:49,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483535643] [2019-10-13 21:03:49,973 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 [2019-10-13 21:03:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:50,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:03:50,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:03:50,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:03:51,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:03:51,614 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:51,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:03:51,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:03:51,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2019-10-13 21:03:51,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132133581] [2019-10-13 21:03:51,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:03:51,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:51,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:03:51,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:03:51,741 INFO L87 Difference]: Start difference. First operand 4977 states and 5918 transitions. Second operand 6 states. [2019-10-13 21:03:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:51,963 INFO L93 Difference]: Finished difference Result 9932 states and 11812 transitions. [2019-10-13 21:03:51,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:03:51,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2019-10-13 21:03:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:51,990 INFO L225 Difference]: With dead ends: 9932 [2019-10-13 21:03:51,990 INFO L226 Difference]: Without dead ends: 4975 [2019-10-13 21:03:52,006 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 [2019-10-13 21:03:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2019-10-13 21:03:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4975. [2019-10-13 21:03:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2019-10-13 21:03:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 5915 transitions. [2019-10-13 21:03:52,242 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 5915 transitions. Word has length 204 [2019-10-13 21:03:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:52,243 INFO L462 AbstractCegarLoop]: Abstraction has 4975 states and 5915 transitions. [2019-10-13 21:03:52,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:03:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 5915 transitions. [2019-10-13 21:03:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:03:52,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:52,252 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] [2019-10-13 21:03:52,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:03:52,462 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash 710223910, now seen corresponding path program 2 times [2019-10-13 21:03:52,463 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:52,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848217145] [2019-10-13 21:03:52,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:52,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:52,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:03:52,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848217145] [2019-10-13 21:03:52,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482820548] [2019-10-13 21:03:52,819 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 [2019-10-13 21:03:53,569 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-13 21:03:53,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:03:53,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:03:53,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:03:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:03:53,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:03:54,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:54,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:54,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:54,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:03:56,129 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-13 21:03:56,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:03:58,004 WARN L191 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 38 [2019-10-13 21:03:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:03:58,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [663640310] [2019-10-13 21:03:58,156 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-13 21:03:58,158 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-13 21:03:58,159 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:03:58,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2019-10-13 21:03:58,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552306284] [2019-10-13 21:03:58,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:03:58,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:03:58,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:03:58,162 INFO L87 Difference]: Start difference. First operand 4975 states and 5915 transitions. Second operand 16 states. [2019-10-13 21:03:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:58,511 INFO L93 Difference]: Finished difference Result 9934 states and 11815 transitions. [2019-10-13 21:03:58,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:03:58,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-10-13 21:03:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:58,560 INFO L225 Difference]: With dead ends: 9934 [2019-10-13 21:03:58,561 INFO L226 Difference]: Without dead ends: 4976 [2019-10-13 21:03:58,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:03:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2019-10-13 21:03:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4976. [2019-10-13 21:03:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4976 states. [2019-10-13 21:03:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4976 states to 4976 states and 5916 transitions. [2019-10-13 21:03:58,778 INFO L78 Accepts]: Start accepts. Automaton has 4976 states and 5916 transitions. Word has length 205 [2019-10-13 21:03:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:58,778 INFO L462 AbstractCegarLoop]: Abstraction has 4976 states and 5916 transitions. [2019-10-13 21:03:58,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:03:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4976 states and 5916 transitions. [2019-10-13 21:03:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:03:58,793 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:58,794 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] [2019-10-13 21:03:59,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:03:59,003 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash -392245338, now seen corresponding path program 3 times [2019-10-13 21:03:59,003 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:59,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124581684] [2019-10-13 21:03:59,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:59,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:59,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:03:59,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124581684] [2019-10-13 21:03:59,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105430647] [2019-10-13 21:03:59,260 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 [2019-10-13 21:03:59,839 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:03:59,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:03:59,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:03:59,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:04:00,051 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:00,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:00,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:00,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:00,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:04,755 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-13 21:04:04,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:04:06,842 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 38 [2019-10-13 21:04:06,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:04:08,936 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 38 [2019-10-13 21:04:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:04:09,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [628068668] [2019-10-13 21:04:09,018 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-13 21:04:09,018 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-13 21:04:09,018 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:04:09,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2019-10-13 21:04:09,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377211926] [2019-10-13 21:04:09,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:04:09,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:09,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:04:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:04:09,023 INFO L87 Difference]: Start difference. First operand 4976 states and 5916 transitions. Second operand 19 states. [2019-10-13 21:04:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:09,417 INFO L93 Difference]: Finished difference Result 9936 states and 11817 transitions. [2019-10-13 21:04:09,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:04:09,418 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 207 [2019-10-13 21:04:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:09,440 INFO L225 Difference]: With dead ends: 9936 [2019-10-13 21:04:09,440 INFO L226 Difference]: Without dead ends: 4977 [2019-10-13 21:04:09,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 401 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:04:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2019-10-13 21:04:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4977. [2019-10-13 21:04:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2019-10-13 21:04:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5917 transitions. [2019-10-13 21:04:09,623 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5917 transitions. Word has length 207 [2019-10-13 21:04:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:09,624 INFO L462 AbstractCegarLoop]: Abstraction has 4977 states and 5917 transitions. [2019-10-13 21:04:09,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:04:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5917 transitions. [2019-10-13 21:04:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:04:09,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:09,634 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] [2019-10-13 21:04:09,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:09,852 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash -374661530, now seen corresponding path program 4 times [2019-10-13 21:04:09,853 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:09,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307631894] [2019-10-13 21:04:09,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:09,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:09,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-13 21:04:10,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307631894] [2019-10-13 21:04:10,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604356510] [2019-10-13 21:04:10,108 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 [2019-10-13 21:04:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:10,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 21:04:10,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 21:04:10,798 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:11,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:11,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:11,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:11,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:11,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:04:13,489 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 39 [2019-10-13 21:04:15,582 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 40