/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf language data_model -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 0.2.0-0f64333 [2020-10-28 08:27:40,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:27:40,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:27:40,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:27:40,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:27:40,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:27:40,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:27:40,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:27:40,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:27:40,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:27:40,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:27:40,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:27:40,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:27:40,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:27:40,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:27:40,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:27:40,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:27:40,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:27:40,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:27:40,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:27:40,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:27:40,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:27:40,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:27:40,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:27:40,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:27:40,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:27:40,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:27:40,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:27:40,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:27:40,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:27:40,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:27:40,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:27:40,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:27:40,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:27:40,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:27:40,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:27:40,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:27:40,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:27:40,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:27:40,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:27:40,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:27:40,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-10-28 08:27:40,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:27:40,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:27:40,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:27:40,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:27:40,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:27:40,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:27:40,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:27:40,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:27:40,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:27:40,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:27:40,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:27:40,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:27:40,872 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:27:40,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:27:40,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:27:40,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:27:40,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:27:40,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:27:40,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:27:40,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:27:40,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:27:40,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:27:40,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:27:40,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:27:40,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:27:40,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:27:40,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-28 08:27:40,877 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:27:41,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:27:41,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:27:41,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:27:41,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:27:41,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:27:41,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/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 [2020-10-28 08:27:41,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b763bea4/dc3269079ad2418fb58074ccad7d78d3/FLAG1c0474136 [2020-10-28 08:27:42,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:27:42,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/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 [2020-10-28 08:27:42,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b763bea4/dc3269079ad2418fb58074ccad7d78d3/FLAG1c0474136 [2020-10-28 08:27:42,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b763bea4/dc3269079ad2418fb58074ccad7d78d3 [2020-10-28 08:27:42,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:27:42,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:27:42,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:27:42,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:27:42,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:27:42,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:27:42" (1/1) ... [2020-10-28 08:27:42,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496872ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:42, skipping insertion in model container [2020-10-28 08:27:42,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:27:42" (1/1) ... [2020-10-28 08:27:42,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:27:42,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:27:43,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:27:43,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:27:43,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:27:43,951 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:27:43,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43 WrapperNode [2020-10-28 08:27:43,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:27:43,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:27:43,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:27:43,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:27:43,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:43,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... [2020-10-28 08:27:44,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:27:44,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:27:44,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:27:44,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:27:44,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 08:27:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:27:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2020-10-28 08:27:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-10-28 08:27:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-10-28 08:27:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2020-10-28 08:27:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2020-10-28 08:27:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2020-10-28 08:27:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2020-10-28 08:27:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2020-10-28 08:27:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2020-10-28 08:27:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2020-10-28 08:27:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2020-10-28 08:27:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2020-10-28 08:27:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2020-10-28 08:27:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 08:27:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-28 08:27:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-28 08:27:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-28 08:27:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-28 08:27:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2020-10-28 08:27:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2020-10-28 08:27:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_find_single_vq [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_done [2020-10-28 08:27:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure do_req [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure do_virtblk_request [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_prepare_flush [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_id [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_ioctl [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_getgeo [2020-10-28 08:27:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_probe [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fini [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_virtio_driver_1 [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_block_device_operations_2 [2020-10-28 08:27:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request_5 [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-28 08:27:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR___0 [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_get_request [2020-10-28 08:27:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blk_make_request [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_blk_rq [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request_all [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2020-10-28 08:27:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_disk [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_map_kern [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2020-10-28 08:27:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2020-10-28 08:27:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2020-10-28 08:27:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_init_queue [2020-10-28 08:27:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_peek_request [2020-10-28 08:27:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_alignment_offset [2020-10-28 08:27:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_bounce_limit [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_min [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_io_opt [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_logical_block_size [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2020-10-28 08:27:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segments [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_physical_block_size [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_sg [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_request [2020-10-28 08:27:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_stop_queue [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_alloc [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create [2020-10-28 08:27:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure register_blkdev [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure register_virtio_driver [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2020-10-28 08:27:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure set_disk_ro [2020-10-28 08:27:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2020-10-28 08:27:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2020-10-28 08:27:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_virtio_driver [2020-10-28 08:27:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_check_driver_offered_feature [2020-10-28 08:27:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_add_buf_gfp [2020-10-28 08:27:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_get_buf [2020-10-28 08:27:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure virtqueue_kick [2020-10-28 08:27:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-28 08:27:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-28 08:27:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 08:27:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-28 08:27:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2020-10-28 08:27:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 08:27:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2020-10-28 08:27:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure register_blkdev [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure set_disk_ro [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2020-10-28 08:27:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_disk [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2020-10-28 08:27:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_alloc [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kmalloc [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_kfree [2020-10-28 08:27:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure bio_map_kern [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request_5 [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2020-10-28 08:27:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure blk_stop_queue [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure blk_peek_request [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_request [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request_all [2020-10-28 08:27:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure blk_init_queue [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_bounce_limit [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segments [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_logical_block_size [2020-10-28 08:27:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_physical_block_size [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_alignment_offset [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_min [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_io_opt [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_sg [2020-10-28 08:27:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 08:27:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-28 08:27:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_make_request [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-28 08:27:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_virtio_driver_1 [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_block_device_operations_2 [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2020-10-28 08:27:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf_gfp [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_add_buf [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_kick [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure virtqueue_get_buf [2020-10-28 08:27:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure register_virtio_driver [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_virtio_driver [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_check_driver_offered_feature [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_find_single_vq [2020-10-28 08:27:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure blk_done [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure do_req [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure do_virtblk_request [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_prepare_flush [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_id [2020-10-28 08:27:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_ioctl [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_getgeo [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_probe [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 08:27:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure fini [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-28 08:27:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR___0 [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blk_get_request [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_blk_rq [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:27:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-28 08:27:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:27:45,672 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-28 08:27:46,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:27:46,627 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 08:27:46,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:27:46 BoogieIcfgContainer [2020-10-28 08:27:46,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:27:46,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:27:46,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:27:46,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:27:46,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:27:42" (1/3) ... [2020-10-28 08:27:46,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50875e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:27:46, skipping insertion in model container [2020-10-28 08:27:46,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:27:43" (2/3) ... [2020-10-28 08:27:46,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50875e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:27:46, skipping insertion in model container [2020-10-28 08:27:46,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:27:46" (3/3) ... [2020-10-28 08:27:46,640 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-10-28 08:27:46,653 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:27:46,660 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:27:46,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:27:46,712 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:27:46,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:27:46,713 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:27:46,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:27:46,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:27:46,713 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:27:46,713 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:27:46,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:27:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2020-10-28 08:27:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 08:27:46,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:27:46,782 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-28 08:27:46,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:27:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:27:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 561097911, now seen corresponding path program 1 times [2020-10-28 08:27:46,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:27:46,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802878533] [2020-10-28 08:27:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:27:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 08:27:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:27:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:27:52,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:27:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 08:27:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:27:52,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:27:52,478 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:27:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:27:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:27:52,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:27:52,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:52,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:27:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:27:52,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:27:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:27:52,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 08:27:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:27:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:27:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:27:52,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:27:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:27:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:27:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:27:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:27:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:27:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:27:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:27:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:27:52,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:27:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 08:27:52,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:27:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:27:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:27:52,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:27:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:52,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:52,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:27:52,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:52,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:27:52,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:27:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:27:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:27:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:27:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:27:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:27:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 08:27:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:27:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:27:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:27:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:27:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:27:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 08:27:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:27:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:27:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:27:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 08:27:53,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:27:53,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 08:27:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:27:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:53,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:27:53,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:27:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 08:27:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:27:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:27:53,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:27:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:27:53,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:27:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:27:53,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:27:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:27:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:27:53,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:27:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:27:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:27:53,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802878533] [2020-10-28 08:27:53,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:27:53,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 08:27:53,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591942008] [2020-10-28 08:27:53,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:27:53,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:27:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:27:53,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:27:53,363 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 11 states. [2020-10-28 08:27:53,656 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:27:54,113 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 08:27:54,403 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 08:27:54,894 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 08:27:55,196 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 08:27:55,541 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 08:27:55,908 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 08:27:56,214 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 08:28:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:28:14,902 INFO L93 Difference]: Finished difference Result 2771 states and 3624 transitions. [2020-10-28 08:28:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:28:14,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-28 08:28:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:28:14,938 INFO L225 Difference]: With dead ends: 2771 [2020-10-28 08:28:14,938 INFO L226 Difference]: Without dead ends: 1964 [2020-10-28 08:28:14,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:28:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-10-28 08:28:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1417. [2020-10-28 08:28:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-28 08:28:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1688 transitions. [2020-10-28 08:28:15,397 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1688 transitions. Word has length 71 [2020-10-28 08:28:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:28:15,398 INFO L481 AbstractCegarLoop]: Abstraction has 1417 states and 1688 transitions. [2020-10-28 08:28:15,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:28:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1688 transitions. [2020-10-28 08:28:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 08:28:15,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:28:15,413 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:28:15,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:28:15,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:28:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:28:15,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1745522794, now seen corresponding path program 1 times [2020-10-28 08:28:15,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:28:15,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187944731] [2020-10-28 08:28:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:28:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 08:28:20,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:28:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,760 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:28:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:28:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:28:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:28:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:20,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:20,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:28:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:28:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 08:28:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:28:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 08:28:20,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:28:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:28:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:28:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:21,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:28:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:28:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:21,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:28:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 08:28:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 08:28:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:28:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:28:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:28:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:21,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:28:21,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 08:28:21,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:28:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:21,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:28:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:21,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:28:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:28:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:21,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:28:21,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:28:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:28:21,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187944731] [2020-10-28 08:28:21,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:28:21,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:28:21,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269593886] [2020-10-28 08:28:21,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:28:21,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:28:21,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:28:21,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:28:21,502 INFO L87 Difference]: Start difference. First operand 1417 states and 1688 transitions. Second operand 14 states. [2020-10-28 08:28:21,712 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:28:22,326 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:28:22,804 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2020-10-28 08:28:23,043 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:28:23,296 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:28:23,569 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:28:24,054 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 154 [2020-10-28 08:28:24,505 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2020-10-28 08:28:24,791 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:28:25,284 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 160 [2020-10-28 08:28:25,774 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2020-10-28 08:28:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:28:38,450 INFO L93 Difference]: Finished difference Result 3402 states and 4257 transitions. [2020-10-28 08:28:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:28:38,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-28 08:28:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:28:38,465 INFO L225 Difference]: With dead ends: 3402 [2020-10-28 08:28:38,465 INFO L226 Difference]: Without dead ends: 2002 [2020-10-28 08:28:38,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2020-10-28 08:28:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-10-28 08:28:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1423. [2020-10-28 08:28:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-10-28 08:28:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1694 transitions. [2020-10-28 08:28:38,699 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1694 transitions. Word has length 75 [2020-10-28 08:28:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:28:38,699 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1694 transitions. [2020-10-28 08:28:38,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:28:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1694 transitions. [2020-10-28 08:28:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 08:28:38,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:28:38,702 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-28 08:28:38,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:28:38,702 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:28:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:28:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1402618134, now seen corresponding path program 2 times [2020-10-28 08:28:38,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:28:38,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122001112] [2020-10-28 08:28:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:28:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 08:28:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:28:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:28:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:28:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 08:28:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:28:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:28:43,998 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:28:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:28:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 08:28:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:28:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:28:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:28:44,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:44,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:28:44,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:28:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:28:44,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:28:44,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:28:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:28:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:28:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:28:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:28:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:28:44,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:28:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:28:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:28:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:28:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:28:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 08:28:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:28:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:28:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:28:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:28:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:28:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:28:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:28:44,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:28:44,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:28:44,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:28:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:28:44,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:28:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:28:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:28:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:28:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:28:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 08:28:44,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122001112] [2020-10-28 08:28:44,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:28:44,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:28:44,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604083194] [2020-10-28 08:28:44,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:28:44,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:28:44,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:28:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:28:44,837 INFO L87 Difference]: Start difference. First operand 1423 states and 1694 transitions. Second operand 14 states. [2020-10-28 08:28:45,056 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:28:45,748 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-28 08:28:45,999 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 08:28:46,249 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:28:46,499 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:28:46,759 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:28:47,072 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 08:28:47,351 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 08:29:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:29:00,236 INFO L93 Difference]: Finished difference Result 3407 states and 4261 transitions. [2020-10-28 08:29:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:29:00,237 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-28 08:29:00,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:29:00,252 INFO L225 Difference]: With dead ends: 3407 [2020-10-28 08:29:00,252 INFO L226 Difference]: Without dead ends: 2003 [2020-10-28 08:29:00,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:29:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-10-28 08:29:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1424. [2020-10-28 08:29:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-10-28 08:29:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1695 transitions. [2020-10-28 08:29:00,489 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1695 transitions. Word has length 77 [2020-10-28 08:29:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:29:00,489 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 1695 transitions. [2020-10-28 08:29:00,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:29:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1695 transitions. [2020-10-28 08:29:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:29:00,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:29:00,491 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2020-10-28 08:29:00,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:29:00,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:29:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:29:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash -622502250, now seen corresponding path program 3 times [2020-10-28 08:29:00,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:29:00,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858042858] [2020-10-28 08:29:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:29:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 08:29:05,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:29:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,793 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:29:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:29:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:29:05,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:29:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:29:05,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:05,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:29:05,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:05,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:05,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:29:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:29:05,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:29:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:29:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:29:05,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:29:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 08:29:06,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:29:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 08:29:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:29:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:29:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:29:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:29:06,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 08:29:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:29:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:29:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:29:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:29:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:29:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:29:06,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 08:29:06,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:29:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:29:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:29:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:06,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:29:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:29:06,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 08:29:06,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858042858] [2020-10-28 08:29:06,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:29:06,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:29:06,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788381586] [2020-10-28 08:29:06,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:29:06,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:29:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:29:06,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:29:06,785 INFO L87 Difference]: Start difference. First operand 1424 states and 1695 transitions. Second operand 18 states. [2020-10-28 08:29:07,016 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:29:07,826 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:29:08,418 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 163 [2020-10-28 08:29:08,701 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:29:08,961 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:09,240 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 08:29:09,495 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:29:09,771 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:10,343 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 157 [2020-10-28 08:29:10,876 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 154 [2020-10-28 08:29:11,465 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2020-10-28 08:29:12,030 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2020-10-28 08:29:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:29:28,585 INFO L93 Difference]: Finished difference Result 3409 states and 4263 transitions. [2020-10-28 08:29:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:29:28,586 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-28 08:29:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:29:28,600 INFO L225 Difference]: With dead ends: 3409 [2020-10-28 08:29:28,600 INFO L226 Difference]: Without dead ends: 2004 [2020-10-28 08:29:28,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 08:29:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-28 08:29:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1425. [2020-10-28 08:29:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-28 08:29:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1696 transitions. [2020-10-28 08:29:28,903 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1696 transitions. Word has length 79 [2020-10-28 08:29:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:29:28,904 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 1696 transitions. [2020-10-28 08:29:28,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:29:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1696 transitions. [2020-10-28 08:29:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 08:29:28,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:29:28,906 INFO L422 BasicCegarLoop]: trace histogram [8, 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] [2020-10-28 08:29:28,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:29:28,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:29:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:29:28,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1882154774, now seen corresponding path program 4 times [2020-10-28 08:29:28,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:29:28,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284277692] [2020-10-28 08:29:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:29:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 08:29:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:29:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-10-28 08:29:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:29:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:29:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:29:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,338 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:29:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:29:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:29:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:29:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:29:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:29:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:29:32,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 08:29:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:29:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:29:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 08:29:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:29:32,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 08:29:32,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:29:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 08:29:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:29:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:29:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:33,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:29:33,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:29:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:29:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:33,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:33,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:33,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:33,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:29:33,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:33,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:29:33,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284277692] [2020-10-28 08:29:33,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:29:33,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:29:33,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133514004] [2020-10-28 08:29:33,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:29:33,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:29:33,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:29:33,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:29:33,084 INFO L87 Difference]: Start difference. First operand 1425 states and 1696 transitions. Second operand 15 states. [2020-10-28 08:29:33,312 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:29:34,048 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 08:29:34,310 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 08:29:34,559 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:29:34,844 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:35,103 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 08:29:35,350 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:29:35,616 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:35,921 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 08:29:36,197 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:36,520 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:29:36,813 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 08:29:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:29:50,974 INFO L93 Difference]: Finished difference Result 3408 states and 4262 transitions. [2020-10-28 08:29:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:29:50,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-10-28 08:29:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:29:50,988 INFO L225 Difference]: With dead ends: 3408 [2020-10-28 08:29:50,988 INFO L226 Difference]: Without dead ends: 2007 [2020-10-28 08:29:50,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:29:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-28 08:29:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1428. [2020-10-28 08:29:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-28 08:29:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1700 transitions. [2020-10-28 08:29:51,214 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1700 transitions. Word has length 81 [2020-10-28 08:29:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:29:51,215 INFO L481 AbstractCegarLoop]: Abstraction has 1428 states and 1700 transitions. [2020-10-28 08:29:51,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:29:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1700 transitions. [2020-10-28 08:29:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 08:29:51,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:29:51,223 INFO L422 BasicCegarLoop]: trace histogram [9, 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] [2020-10-28 08:29:51,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:29:51,223 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:29:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:29:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash -664816420, now seen corresponding path program 5 times [2020-10-28 08:29:51,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:29:51,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354745118] [2020-10-28 08:29:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:29:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:51,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 08:29:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:29:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3061 [2020-10-28 08:29:54,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:29:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:29:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:29:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,571 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:29:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:29:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:54,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:29:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:29:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:29:54,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:29:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:29:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:29:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:29:54,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:54,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:29:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:54,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:54,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 08:29:54,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:29:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:54,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:55,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:29:55,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 08:29:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:29:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:29:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:29:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:29:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:55,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:55,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:29:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:29:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:29:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:29:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:29:55,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:29:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:29:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:29:55,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354745118] [2020-10-28 08:29:55,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:29:55,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:29:55,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100991721] [2020-10-28 08:29:55,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:29:55,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:29:55,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:29:55,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:29:55,391 INFO L87 Difference]: Start difference. First operand 1428 states and 1700 transitions. Second operand 16 states. [2020-10-28 08:29:55,636 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:29:56,436 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-28 08:29:56,717 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:29:56,980 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:29:57,239 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:29:57,503 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:29:57,757 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:29:58,015 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:29:58,302 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:29:58,703 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 08:29:59,036 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 08:29:59,372 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 08:29:59,699 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 08:30:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:30:16,193 INFO L93 Difference]: Finished difference Result 3414 states and 4270 transitions. [2020-10-28 08:30:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 08:30:16,194 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-28 08:30:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:30:16,204 INFO L225 Difference]: With dead ends: 3414 [2020-10-28 08:30:16,204 INFO L226 Difference]: Without dead ends: 2010 [2020-10-28 08:30:16,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2020-10-28 08:30:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2020-10-28 08:30:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1429. [2020-10-28 08:30:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-28 08:30:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1702 transitions. [2020-10-28 08:30:16,440 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1702 transitions. Word has length 82 [2020-10-28 08:30:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:30:16,443 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 1702 transitions. [2020-10-28 08:30:16,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:30:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1702 transitions. [2020-10-28 08:30:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 08:30:16,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:30:16,449 INFO L422 BasicCegarLoop]: trace histogram [10, 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] [2020-10-28 08:30:16,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:30:16,450 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:30:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:30:16,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1582033110, now seen corresponding path program 6 times [2020-10-28 08:30:16,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:30:16,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146133782] [2020-10-28 08:30:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:30:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 08:30:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:30:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3513 [2020-10-28 08:30:20,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:30:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:30:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:30:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:20,288 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:30:20,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:30:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:20,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:30:20,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:30:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:30:20,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:30:20,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:20,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:30:20,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:30:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:30:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:30:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:30:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:30:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:30:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:30:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:30:20,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:30:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:30:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:30:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 08:30:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:20,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 08:30:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 08:30:20,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:30:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:20,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:30:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:30:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:21,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:30:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:30:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:30:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:30:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:21,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:30:21,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146133782] [2020-10-28 08:30:21,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:30:21,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:30:21,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577270639] [2020-10-28 08:30:21,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:30:21,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:30:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:30:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:30:21,342 INFO L87 Difference]: Start difference. First operand 1429 states and 1702 transitions. Second operand 17 states. [2020-10-28 08:30:21,612 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:30:22,604 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-28 08:30:22,918 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:30:23,211 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:23,498 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:23,788 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:24,092 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:24,375 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:24,672 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:30:25,009 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:30:25,402 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 08:30:25,771 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-28 08:30:26,140 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 08:30:26,533 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 08:30:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:30:44,824 INFO L93 Difference]: Finished difference Result 3418 states and 4276 transitions. [2020-10-28 08:30:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:30:44,825 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-10-28 08:30:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:30:44,838 INFO L225 Difference]: With dead ends: 3418 [2020-10-28 08:30:44,838 INFO L226 Difference]: Without dead ends: 2013 [2020-10-28 08:30:44,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 08:30:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-28 08:30:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1430. [2020-10-28 08:30:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-10-28 08:30:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1704 transitions. [2020-10-28 08:30:45,075 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1704 transitions. Word has length 83 [2020-10-28 08:30:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:30:45,076 INFO L481 AbstractCegarLoop]: Abstraction has 1430 states and 1704 transitions. [2020-10-28 08:30:45,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:30:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1704 transitions. [2020-10-28 08:30:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 08:30:45,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:30:45,078 INFO L422 BasicCegarLoop]: trace histogram [11, 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] [2020-10-28 08:30:45,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:30:45,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:30:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:30:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 49020572, now seen corresponding path program 7 times [2020-10-28 08:30:45,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:30:45,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454240318] [2020-10-28 08:30:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:30:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3200 [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:30:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 08:30:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 08:30:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:30:48,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:30:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:30:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:30:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:48,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:30:48,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:48,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:30:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:30:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:30:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:30:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:30:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:30:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:48,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:48,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:30:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:30:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:30:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 08:30:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:30:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:30:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:30:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:49,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:49,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:30:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:30:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:30:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:30:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:30:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:30:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:30:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 08:30:49,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454240318] [2020-10-28 08:30:49,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:30:49,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:30:49,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616674813] [2020-10-28 08:30:49,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:30:49,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:30:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:30:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:30:49,586 INFO L87 Difference]: Start difference. First operand 1430 states and 1704 transitions. Second operand 18 states. [2020-10-28 08:30:49,857 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 08:30:50,792 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 08:30:51,090 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 08:30:51,380 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:51,668 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:51,954 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:52,241 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:52,542 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:52,841 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 08:30:53,157 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 08:30:53,498 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:30:53,825 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 08:30:54,110 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 08:30:54,452 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 08:30:54,774 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 08:31:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:31:12,482 INFO L93 Difference]: Finished difference Result 3422 states and 4282 transitions. [2020-10-28 08:31:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 08:31:12,483 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2020-10-28 08:31:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:31:12,494 INFO L225 Difference]: With dead ends: 3422 [2020-10-28 08:31:12,494 INFO L226 Difference]: Without dead ends: 2016 [2020-10-28 08:31:12,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 08:31:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2020-10-28 08:31:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1431. [2020-10-28 08:31:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-10-28 08:31:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1706 transitions. [2020-10-28 08:31:12,733 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1706 transitions. Word has length 84 [2020-10-28 08:31:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:31:12,734 INFO L481 AbstractCegarLoop]: Abstraction has 1431 states and 1706 transitions. [2020-10-28 08:31:12,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:31:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1706 transitions. [2020-10-28 08:31:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 08:31:12,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:31:12,736 INFO L422 BasicCegarLoop]: trace histogram [12, 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] [2020-10-28 08:31:12,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:31:12,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:31:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:31:12,737 INFO L82 PathProgramCache]: Analyzing trace with hash -927922838, now seen corresponding path program 8 times [2020-10-28 08:31:12,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:31:12,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010844073] [2020-10-28 08:31:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:31:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 08:31:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-28 08:31:13,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:31:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 08:31:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 08:31:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,445 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 08:31:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:31:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:31:13,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:31:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:31:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:31:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:31:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:31:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:31:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 08:31:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:31:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:31:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:31:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:31:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:31:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 08:31:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:31:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:31:13,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:31:13,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:31:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 08:31:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:31:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:31:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:31:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:31:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:31:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 08:31:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 08:31:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:31:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:31:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:31:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:31:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:31:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:31:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-28 08:31:13,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010844073] [2020-10-28 08:31:13,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:31:13,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 08:31:13,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248725368] [2020-10-28 08:31:13,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:31:13,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:31:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:31:13,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:31:13,758 INFO L87 Difference]: Start difference. First operand 1431 states and 1706 transitions. Second operand 8 states. [2020-10-28 08:31:13,988 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 154