/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=SHALLOWEST --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-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 08:36:15,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 08:36:15,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 08:36:15,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 08:36:15,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 08:36:15,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 08:36:15,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 08:36:15,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 08:36:15,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 08:36:15,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 08:36:15,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 08:36:15,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 08:36:15,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 08:36:15,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 08:36:15,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 08:36:15,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 08:36:15,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 08:36:15,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 08:36:15,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 08:36:15,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 08:36:15,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 08:36:15,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 08:36:15,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 08:36:15,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 08:36:15,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 08:36:15,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 08:36:15,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 08:36:15,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 08:36:15,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 08:36:15,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 08:36:15,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 08:36:15,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 08:36:15,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 08:36:15,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 08:36:15,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 08:36:15,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 08:36:15,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 08:36:15,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 08:36:15,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 08:36:15,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 08:36:15,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 08:36:15,699 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 [2020-10-27 08:36:15,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 08:36:15,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 08:36:15,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 08:36:15,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 08:36:15,754 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 08:36:15,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 08:36:15,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 08:36:15,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 08:36:15,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 08:36:15,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 08:36:15,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 08:36:15,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 08:36:15,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 08:36:15,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 08:36:15,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 08:36:15,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 08:36:15,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 08:36:15,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 08:36:15,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 08:36:15,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 08:36:15,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 08:36:15,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 08:36:15,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 08:36:15,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 08:36:15,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 08:36:15,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 08:36:15,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-27 08:36:15,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 08:36:16,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 08:36:16,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 08:36:16,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 08:36:16,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 08:36:16,224 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 08:36:16,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2020-10-27 08:36:16,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87b051d1/82bcaf8671894687b665ccb59e3cbf68/FLAG610ca925b [2020-10-27 08:36:17,357 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 08:36:17,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2020-10-27 08:36:17,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87b051d1/82bcaf8671894687b665ccb59e3cbf68/FLAG610ca925b [2020-10-27 08:36:17,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c87b051d1/82bcaf8671894687b665ccb59e3cbf68 [2020-10-27 08:36:17,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 08:36:17,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 08:36:17,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 08:36:17,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 08:36:17,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 08:36:17,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:17" (1/1) ... [2020-10-27 08:36:17,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc7dc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:17, skipping insertion in model container [2020-10-27 08:36:17,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:17" (1/1) ... [2020-10-27 08:36:17,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 08:36:18,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 08:36:19,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 08:36:19,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 08:36:19,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 08:36:19,452 INFO L208 MainTranslator]: Completed translation [2020-10-27 08:36:19,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19 WrapperNode [2020-10-27 08:36:19,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 08:36:19,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 08:36:19,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 08:36:19,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 08:36:19,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (1/1) ... [2020-10-27 08:36:19,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 08:36:19,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 08:36:19,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 08:36:19,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 08:36:19,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (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 [2020-10-27 08:36:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 08:36:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 08:36:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 08:36:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2020-10-27 08:36:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2020-10-27 08:36:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-10-27 08:36:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-10-27 08:36:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2020-10-27 08:36:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2020-10-27 08:36:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2020-10-27 08:36:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2020-10-27 08:36:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2020-10-27 08:36:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_dump_class_desc [2020-10-27 08:36:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_usb_find_class_desc [2020-10-27 08:36:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2020-10-27 08:36:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_startup [2020-10-27 08:36:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_open [2020-10-27 08:36:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_prepare_write_buffer [2020-10-27 08:36:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_process_read_urb [2020-10-27 08:36:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios_callback [2020-10-27 08:36:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_set_termios [2020-10-27 08:36:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2020-10-27 08:36:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2020-10-27 08:36:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2020-10-27 08:36:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2020-10-27 08:36:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 08:36:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2020-10-27 08:36:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2020-10-27 08:36:19,792 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-27 08:36:19,793 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2020-10-27 08:36:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2020-10-27 08:36:19,794 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_copy_hw [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2020-10-27 08:36:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2020-10-27 08:36:19,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2020-10-27 08:36:19,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2020-10-27 08:36:19,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_open [2020-10-27 08:36:19,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2020-10-27 08:36:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2020-10-27 08:36:19,797 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 08:36:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2020-10-27 08:36:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-27 08:36:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-10-27 08:36:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-10-27 08:36:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-27 08:36:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2020-10-27 08:36:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2020-10-27 08:36:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2020-10-27 08:36:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_copy_hw [2020-10-27 08:36:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2020-10-27 08:36:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2020-10-27 08:36:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2020-10-27 08:36:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2020-10-27 08:36:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2020-10-27 08:36:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2020-10-27 08:36:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2020-10-27 08:36:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_open [2020-10-27 08:36:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure ir_startup [2020-10-27 08:36:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ir_open [2020-10-27 08:36:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ir_prepare_write_buffer [2020-10-27 08:36:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ir_process_read_urb [2020-10-27 08:36:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios [2020-10-27 08:36:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_dump_class_desc [2020-10-27 08:36:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure irda_usb_find_class_desc [2020-10-27 08:36:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2020-10-27 08:36:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ir_set_termios_callback [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2020-10-27 08:36:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 08:36:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 08:36:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 08:36:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-27 08:36:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 08:36:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-27 08:36:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 08:36:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 08:36:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 08:36:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 08:36:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 08:36:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 08:36:20,691 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:20,888 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2020-10-27 08:36:20,888 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2020-10-27 08:36:20,938 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:21,004 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2020-10-27 08:36:21,005 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2020-10-27 08:36:21,378 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2020-10-27 08:36:21,386 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:21,415 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2020-10-27 08:36:21,416 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2020-10-27 08:36:25,182 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 08:36:25,300 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume false; [2020-10-27 08:36:25,300 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !false; [2020-10-27 08:36:25,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 08:36:25,366 INFO L298 CfgBuilder]: Removed 27 assume(true) statements. [2020-10-27 08:36:25,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:25 BoogieIcfgContainer [2020-10-27 08:36:25,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 08:36:25,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 08:36:25,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 08:36:25,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 08:36:25,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:36:17" (1/3) ... [2020-10-27 08:36:25,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bffe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:25, skipping insertion in model container [2020-10-27 08:36:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:19" (2/3) ... [2020-10-27 08:36:25,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bffe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:25, skipping insertion in model container [2020-10-27 08:36:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:25" (3/3) ... [2020-10-27 08:36:25,383 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2020-10-27 08:36:25,395 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 08:36:25,403 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 08:36:25,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 08:36:25,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 08:36:25,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 08:36:25,468 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 08:36:25,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 08:36:25,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 08:36:25,468 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 08:36:25,468 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 08:36:25,468 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 08:36:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states. [2020-10-27 08:36:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 08:36:25,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:36:25,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:36:25,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:36:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:36:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1725654207, now seen corresponding path program 1 times [2020-10-27 08:36:25,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:36:25,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617762904] [2020-10-27 08:36:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:36:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:31,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:31,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 08:36:31,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 08:36:31,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 08:36:31,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:36:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:36:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 08:36:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 08:36:34,456 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 08:36:34,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:36:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:35,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:36:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-27 08:36:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:36:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:36:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:35,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:35,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:36:35,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:36:35,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:36:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:36:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:36,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 08:36:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 08:36:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:36:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 08:36:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:36,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:36:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:36:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:36:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:36:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:36:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:36:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 08:36:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:36:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:36:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:36:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:36:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:36:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:36:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617762904] [2020-10-27 08:36:36,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:36:36,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 08:36:36,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845698400] [2020-10-27 08:36:36,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 08:36:36,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:36:36,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 08:36:36,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 08:36:36,136 INFO L87 Difference]: Start difference. First operand 447 states. Second operand 5 states. [2020-10-27 08:36:39,362 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification that was a NOOP. DAG size: 700 [2020-10-27 08:36:44,921 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification that was a NOOP. DAG size: 702 [2020-10-27 08:36:48,219 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification that was a NOOP. DAG size: 693 [2020-10-27 08:37:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:37:05,586 INFO L93 Difference]: Finished difference Result 1470 states and 2100 transitions. [2020-10-27 08:37:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 08:37:05,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-27 08:37:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:37:05,620 INFO L225 Difference]: With dead ends: 1470 [2020-10-27 08:37:05,621 INFO L226 Difference]: Without dead ends: 1063 [2020-10-27 08:37:05,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 08:37:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-10-27 08:37:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 791. [2020-10-27 08:37:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-27 08:37:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 976 transitions. [2020-10-27 08:37:06,221 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 976 transitions. Word has length 29 [2020-10-27 08:37:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:37:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 976 transitions. [2020-10-27 08:37:06,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 08:37:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 976 transitions. [2020-10-27 08:37:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 08:37:06,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:37:06,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:37:06,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 08:37:06,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:37:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:37:06,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2140840293, now seen corresponding path program 1 times [2020-10-27 08:37:06,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:37:06,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735749674] [2020-10-27 08:37:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:37:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:11,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 08:37:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 08:37:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-27 08:37:11,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 08:37:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:37:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 08:37:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:14,651 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 08:37:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:37:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:15,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:15,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:15,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1191 [2020-10-27 08:37:15,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:15,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:37:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:16,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:37:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:16,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:37:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 08:37:16,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:37:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:37:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:16,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 08:37:16,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 08:37:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 08:37:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 08:37:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 08:37:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:37:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 08:37:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 08:37:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:37:16,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735749674] [2020-10-27 08:37:16,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:37:16,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 08:37:16,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104505065] [2020-10-27 08:37:16,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 08:37:16,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:37:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 08:37:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 08:37:16,326 INFO L87 Difference]: Start difference. First operand 791 states and 976 transitions. Second operand 7 states. [2020-10-27 08:37:19,491 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 700 [2020-10-27 08:37:24,722 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification that was a NOOP. DAG size: 704 [2020-10-27 08:37:31,091 WARN L193 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 710 DAG size of output: 708 [2020-10-27 08:37:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:37:47,857 INFO L93 Difference]: Finished difference Result 2612 states and 3327 transitions. [2020-10-27 08:37:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 08:37:47,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-27 08:37:47,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:37:47,871 INFO L225 Difference]: With dead ends: 2612 [2020-10-27 08:37:47,872 INFO L226 Difference]: Without dead ends: 1833 [2020-10-27 08:37:47,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 08:37:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-10-27 08:37:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1419. [2020-10-27 08:37:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-10-27 08:37:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1783 transitions. [2020-10-27 08:37:48,583 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1783 transitions. Word has length 30 [2020-10-27 08:37:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:37:48,583 INFO L481 AbstractCegarLoop]: Abstraction has 1419 states and 1783 transitions. [2020-10-27 08:37:48,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 08:37:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1783 transitions. [2020-10-27 08:37:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 08:37:48,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:37:48,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:37:48,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 08:37:48,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:37:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:37:48,586 INFO L82 PathProgramCache]: Analyzing trace with hash 465183261, now seen corresponding path program 1 times [2020-10-27 08:37:48,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:37:48,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129601670] [2020-10-27 08:37:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:37:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:50,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:37:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 08:37:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:53,466 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 08:37:53,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:37:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:54,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-27 08:37:54,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:37:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 08:37:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:37:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:37:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:37:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:37:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 08:37:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:37:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:54,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:54,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 08:37:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:54,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 08:37:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:37:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 08:37:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:37:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:37:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:37:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:37:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:37:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:37:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:37:54,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:37:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:37:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:37:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:37:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:37:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 08:37:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129601670] [2020-10-27 08:37:54,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:37:54,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 08:37:54,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225877772] [2020-10-27 08:37:54,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 08:37:54,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:37:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 08:37:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 08:37:54,788 INFO L87 Difference]: Start difference. First operand 1419 states and 1783 transitions. Second operand 5 states. [2020-10-27 08:37:57,845 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 700 [2020-10-27 08:38:03,124 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification that was a NOOP. DAG size: 702 [2020-10-27 08:38:06,918 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification that was a NOOP. DAG size: 693 [2020-10-27 08:38:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:38:14,500 INFO L93 Difference]: Finished difference Result 1812 states and 2342 transitions. [2020-10-27 08:38:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 08:38:14,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-27 08:38:14,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:38:14,513 INFO L225 Difference]: With dead ends: 1812 [2020-10-27 08:38:14,513 INFO L226 Difference]: Without dead ends: 1784 [2020-10-27 08:38:14,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 08:38:14,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-10-27 08:38:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1396. [2020-10-27 08:38:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-10-27 08:38:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1753 transitions. [2020-10-27 08:38:15,272 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1753 transitions. Word has length 30 [2020-10-27 08:38:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:38:15,272 INFO L481 AbstractCegarLoop]: Abstraction has 1396 states and 1753 transitions. [2020-10-27 08:38:15,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 08:38:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1753 transitions. [2020-10-27 08:38:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 08:38:15,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:38:15,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:38:15,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 08:38:15,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:38:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:38:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1170045196, now seen corresponding path program 1 times [2020-10-27 08:38:15,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:38:15,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842226755] [2020-10-27 08:38:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:38:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 08:38:21,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 08:38:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6171 [2020-10-27 08:38:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 08:38:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:38:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 08:38:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:24,720 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 08:38:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:38:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:25,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-27 08:38:25,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:38:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:38:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:38:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:38:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:38:25,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:38:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:38:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:38:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 08:38:25,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 08:38:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:38:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 08:38:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:38:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 08:38:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 08:38:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:38:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 08:38:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 08:38:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:38:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 08:38:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 08:38:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 08:38:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:25,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:38:25,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:38:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 08:38:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:25,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:38:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 08:38:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 08:38:26,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 08:38:26,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 08:38:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:38:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:38:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 08:38:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:38:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:38:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:38:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 08:38:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:38:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 08:38:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 08:38:26,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 08:38:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 08:38:26,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:38:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:38:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:38:26,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:38:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:38:26,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:38:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:38:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 08:38:26,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842226755] [2020-10-27 08:38:26,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:38:26,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 08:38:26,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467186843] [2020-10-27 08:38:26,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 08:38:26,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:38:26,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 08:38:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 08:38:26,320 INFO L87 Difference]: Start difference. First operand 1396 states and 1753 transitions. Second operand 9 states. [2020-10-27 08:38:29,570 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 700 [2020-10-27 08:38:34,874 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification that was a NOOP. DAG size: 702 [2020-10-27 08:38:38,756 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 693 [2020-10-27 08:38:43,292 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification that was a NOOP. DAG size: 705 [2020-10-27 08:38:46,906 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 711 [2020-10-27 08:38:56,684 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification that was a NOOP. DAG size: 703 [2020-10-27 08:39:00,167 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 710 [2020-10-27 08:39:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:39:10,323 INFO L93 Difference]: Finished difference Result 5240 states and 6949 transitions. [2020-10-27 08:39:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 08:39:10,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 08:39:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:39:10,348 INFO L225 Difference]: With dead ends: 5240 [2020-10-27 08:39:10,348 INFO L226 Difference]: Without dead ends: 3882 [2020-10-27 08:39:10,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-27 08:39:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2020-10-27 08:39:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3006. [2020-10-27 08:39:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3006 states. [2020-10-27 08:39:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 3849 transitions. [2020-10-27 08:39:12,369 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 3849 transitions. Word has length 106 [2020-10-27 08:39:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:39:12,372 INFO L481 AbstractCegarLoop]: Abstraction has 3006 states and 3849 transitions. [2020-10-27 08:39:12,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 08:39:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 3849 transitions. [2020-10-27 08:39:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 08:39:12,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:39:12,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:39:12,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 08:39:12,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:39:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:39:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash -353960848, now seen corresponding path program 1 times [2020-10-27 08:39:12,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:39:12,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538277891] [2020-10-27 08:39:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:39:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:12,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:17,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 08:39:17,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 08:39:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5211 [2020-10-27 08:39:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 08:39:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:39:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 08:39:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:21,105 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification that was a NOOP. DAG size: 691 [2020-10-27 08:39:21,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:39:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:39:22,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 08:39:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 08:39:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-27 08:39:22,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:39:22,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:39:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 08:39:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 08:39:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 08:39:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 08:39:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 08:39:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 08:39:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 08:39:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 08:39:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:39:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:39:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:39:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:39:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 08:39:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 08:39:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:39:22,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:39:22,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 08:39:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 08:39:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 08:39:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 08:39:22,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 08:39:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 08:39:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 08:39:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:39:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 08:39:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 08:39:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 08:39:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 08:39:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 08:39:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 08:39:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 08:39:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 08:39:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:39:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:39:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 08:39:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 08:39:22,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 08:39:22,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 08:39:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:39:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 08:39:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 08:39:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 08:39:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:22,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 08:39:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 08:39:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 08:39:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 08:39:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 08:39:22,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538277891] [2020-10-27 08:39:22,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 08:39:22,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 08:39:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097725492] [2020-10-27 08:39:22,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 08:39:22,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 08:39:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 08:39:22,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 08:39:22,744 INFO L87 Difference]: Start difference. First operand 3006 states and 3849 transitions. Second operand 9 states. [2020-10-27 08:39:26,061 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification that was a NOOP. DAG size: 700 [2020-10-27 08:39:31,648 WARN L193 SmtUtils]: Spent 3.44 s on a formula simplification that was a NOOP. DAG size: 706 [2020-10-27 08:39:36,767 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification that was a NOOP. DAG size: 709 [2020-10-27 08:39:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 08:39:53,123 INFO L93 Difference]: Finished difference Result 6770 states and 8949 transitions. [2020-10-27 08:39:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 08:39:53,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 08:39:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 08:39:53,148 INFO L225 Difference]: With dead ends: 6770 [2020-10-27 08:39:53,149 INFO L226 Difference]: Without dead ends: 3794 [2020-10-27 08:39:53,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-27 08:39:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-10-27 08:39:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2990. [2020-10-27 08:39:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2990 states. [2020-10-27 08:39:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 3823 transitions. [2020-10-27 08:39:54,624 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 3823 transitions. Word has length 106 [2020-10-27 08:39:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 08:39:54,625 INFO L481 AbstractCegarLoop]: Abstraction has 2990 states and 3823 transitions. [2020-10-27 08:39:54,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 08:39:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 3823 transitions. [2020-10-27 08:39:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 08:39:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 08:39:54,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 08:39:54,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 08:39:54,631 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 08:39:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 08:39:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash 361461380, now seen corresponding path program 1 times [2020-10-27 08:39:54,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 08:39:54,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84683633] [2020-10-27 08:39:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 08:39:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 08:39:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 08:39:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking...