/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:21:51,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:21:51,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:21:51,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:21:51,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:21:51,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:21:51,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:21:51,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:21:51,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:21:51,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:21:51,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:21:51,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:21:51,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:21:51,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:21:51,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:21:51,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:21:51,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:21:51,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:21:51,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:21:51,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:21:51,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:21:51,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:21:51,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:21:51,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:21:51,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:21:51,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:21:51,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:21:51,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:21:51,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:21:51,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:21:51,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:21:51,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:21:51,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:21:51,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:21:51,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:21:51,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:21:51,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:21:51,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:21:51,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:21:51,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:21:51,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:21:51,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:21:51,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:21:51,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:21:51,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:21:51,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:21:51,884 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:21:51,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:21:51,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:21:51,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:21:51,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:21:51,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:21:51,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:21:51,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:21:51,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:21:51,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:21:51,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:21:51,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:21:51,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:21:51,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:21:51,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:21:51,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:21:51,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:21:51,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:21:51,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:21:51,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:21:51,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:21:51,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:21:52,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:21:52,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:21:52,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:21:52,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:21:52,371 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:21:52,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2020-12-22 13:21:52,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a846d9cb/e810564faae54047bf5820973b08c4c0/FLAG294ddda3d [2020-12-22 13:21:53,645 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:21:53,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2020-12-22 13:21:53,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a846d9cb/e810564faae54047bf5820973b08c4c0/FLAG294ddda3d [2020-12-22 13:21:53,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a846d9cb/e810564faae54047bf5820973b08c4c0 [2020-12-22 13:21:53,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:21:53,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:21:53,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:21:53,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:21:53,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:21:53,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:21:53" (1/1) ... [2020-12-22 13:21:53,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9e21cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:21:53, skipping insertion in model container [2020-12-22 13:21:53,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:21:53" (1/1) ... [2020-12-22 13:21:53,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:21:54,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:21:55,975 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i[177976,177989] [2020-12-22 13:21:58,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:21:58,522 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:21:58,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i[177976,177989] [2020-12-22 13:21:59,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:22:00,365 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:22:00,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00 WrapperNode [2020-12-22 13:22:00,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:22:00,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:22:00,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:22:00,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:22:00,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:00,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:01,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:22:01,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:22:01,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:22:01,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:22:01,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:01,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:01,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:01,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:02,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:02,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:02,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... [2020-12-22 13:22:03,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:22:03,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:22:03,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:22:03,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:22:03,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:22:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2020-12-22 13:22:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2020-12-22 13:22:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2020-12-22 13:22:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2020-12-22 13:22:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2020-12-22 13:22:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2020-12-22 13:22:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2020-12-22 13:22:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2020-12-22 13:22:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2020-12-22 13:22:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2020-12-22 13:22:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:22:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2020-12-22 13:22:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2020-12-22 13:22:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:22:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:22:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:22:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2020-12-22 13:22:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2020-12-22 13:22:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2020-12-22 13:22:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2020-12-22 13:22:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2020-12-22 13:22:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:22:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:22:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:22:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:22:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:22:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:22:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 13:22:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2020-12-22 13:22:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2020-12-22 13:22:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2020-12-22 13:22:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2020-12-22 13:22:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:22:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:22:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2020-12-22 13:22:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2020-12-22 13:22:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2020-12-22 13:22:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2020-12-22 13:22:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:22:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:22:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2020-12-22 13:22:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2020-12-22 13:22:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2020-12-22 13:22:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2020-12-22 13:22:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2020-12-22 13:22:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2020-12-22 13:22:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2020-12-22 13:22:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:22:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2020-12-22 13:22:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2020-12-22 13:22:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2020-12-22 13:22:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2020-12-22 13:22:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2020-12-22 13:22:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2020-12-22 13:22:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2020-12-22 13:22:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2020-12-22 13:22:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:22:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:22:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2020-12-22 13:22:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2020-12-22 13:22:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:22:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2020-12-22 13:22:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2020-12-22 13:22:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2020-12-22 13:22:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2020-12-22 13:22:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2020-12-22 13:22:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2020-12-22 13:22:29,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:22:29,936 INFO L299 CfgBuilder]: Removed 5565 assume(true) statements. [2020-12-22 13:22:29,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:22:29 BoogieIcfgContainer [2020-12-22 13:22:29,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:22:29,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:22:29,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:22:29,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:22:29,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:21:53" (1/3) ... [2020-12-22 13:22:29,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0edf60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:22:29, skipping insertion in model container [2020-12-22 13:22:29,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:22:00" (2/3) ... [2020-12-22 13:22:29,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0edf60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:22:29, skipping insertion in model container [2020-12-22 13:22:29,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:22:29" (3/3) ... [2020-12-22 13:22:29,954 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2020-12-22 13:22:29,961 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:22:29,969 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:22:29,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:22:30,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:22:30,045 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:22:30,045 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:22:30,045 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:22:30,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:22:30,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:22:30,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:22:30,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:22:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states. [2020-12-22 13:22:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 13:22:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:30,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:30,162 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1443674913, now seen corresponding path program 1 times [2020-12-22 13:22:30,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:30,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866800424] [2020-12-22 13:22:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:22:31,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866800424] [2020-12-22 13:22:31,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:31,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:31,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781963078] [2020-12-22 13:22:31,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:31,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:31,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:31,165 INFO L87 Difference]: Start difference. First operand 6373 states. Second operand 3 states. [2020-12-22 13:22:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:31,622 INFO L93 Difference]: Finished difference Result 12743 states and 18957 transitions. [2020-12-22 13:22:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:31,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 13:22:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:31,698 INFO L225 Difference]: With dead ends: 12743 [2020-12-22 13:22:31,698 INFO L226 Difference]: Without dead ends: 6358 [2020-12-22 13:22:31,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2020-12-22 13:22:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2020-12-22 13:22:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6358 states. [2020-12-22 13:22:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9290 transitions. [2020-12-22 13:22:32,328 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9290 transitions. Word has length 47 [2020-12-22 13:22:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:32,330 INFO L481 AbstractCegarLoop]: Abstraction has 6358 states and 9290 transitions. [2020-12-22 13:22:32,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9290 transitions. [2020-12-22 13:22:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 13:22:32,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:32,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:32,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:22:32,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1101231259, now seen corresponding path program 1 times [2020-12-22 13:22:32,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:32,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609281261] [2020-12-22 13:22:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:22:32,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609281261] [2020-12-22 13:22:32,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:32,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:32,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474310695] [2020-12-22 13:22:32,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:32,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:32,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:32,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:32,678 INFO L87 Difference]: Start difference. First operand 6358 states and 9290 transitions. Second operand 3 states. [2020-12-22 13:22:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:33,147 INFO L93 Difference]: Finished difference Result 12657 states and 18509 transitions. [2020-12-22 13:22:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:33,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 13:22:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:33,191 INFO L225 Difference]: With dead ends: 12657 [2020-12-22 13:22:33,191 INFO L226 Difference]: Without dead ends: 6359 [2020-12-22 13:22:33,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2020-12-22 13:22:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 6359. [2020-12-22 13:22:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6359 states. [2020-12-22 13:22:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9291 transitions. [2020-12-22 13:22:33,452 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9291 transitions. Word has length 49 [2020-12-22 13:22:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:33,453 INFO L481 AbstractCegarLoop]: Abstraction has 6359 states and 9291 transitions. [2020-12-22 13:22:33,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9291 transitions. [2020-12-22 13:22:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 13:22:33,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:33,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:33,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:22:33,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1185725313, now seen corresponding path program 1 times [2020-12-22 13:22:33,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:33,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072772467] [2020-12-22 13:22:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:22:33,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072772467] [2020-12-22 13:22:33,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:33,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:33,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213967034] [2020-12-22 13:22:33,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:33,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:33,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:33,888 INFO L87 Difference]: Start difference. First operand 6359 states and 9291 transitions. Second operand 3 states. [2020-12-22 13:22:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:34,282 INFO L93 Difference]: Finished difference Result 12656 states and 18507 transitions. [2020-12-22 13:22:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:34,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 13:22:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:34,334 INFO L225 Difference]: With dead ends: 12656 [2020-12-22 13:22:34,334 INFO L226 Difference]: Without dead ends: 6360 [2020-12-22 13:22:34,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2020-12-22 13:22:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 6360. [2020-12-22 13:22:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6360 states. [2020-12-22 13:22:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9292 transitions. [2020-12-22 13:22:34,568 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9292 transitions. Word has length 50 [2020-12-22 13:22:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:34,568 INFO L481 AbstractCegarLoop]: Abstraction has 6360 states and 9292 transitions. [2020-12-22 13:22:34,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9292 transitions. [2020-12-22 13:22:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 13:22:34,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:34,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:34,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:22:34,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash -410931799, now seen corresponding path program 1 times [2020-12-22 13:22:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:34,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754033944] [2020-12-22 13:22:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:22:34,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754033944] [2020-12-22 13:22:34,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:34,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:34,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880329736] [2020-12-22 13:22:34,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:34,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:34,876 INFO L87 Difference]: Start difference. First operand 6360 states and 9292 transitions. Second operand 3 states. [2020-12-22 13:22:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:37,581 INFO L93 Difference]: Finished difference Result 18900 states and 27660 transitions. [2020-12-22 13:22:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:37,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 13:22:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:37,686 INFO L225 Difference]: With dead ends: 18900 [2020-12-22 13:22:37,686 INFO L226 Difference]: Without dead ends: 12605 [2020-12-22 13:22:37,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2020-12-22 13:22:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 12605. [2020-12-22 13:22:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12605 states. [2020-12-22 13:22:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12605 states to 12605 states and 18444 transitions. [2020-12-22 13:22:38,209 INFO L78 Accepts]: Start accepts. Automaton has 12605 states and 18444 transitions. Word has length 51 [2020-12-22 13:22:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:38,211 INFO L481 AbstractCegarLoop]: Abstraction has 12605 states and 18444 transitions. [2020-12-22 13:22:38,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 12605 states and 18444 transitions. [2020-12-22 13:22:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 13:22:38,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:38,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:38,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:22:38,216 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash 328131653, now seen corresponding path program 1 times [2020-12-22 13:22:38,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:38,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984111246] [2020-12-22 13:22:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:22:38,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984111246] [2020-12-22 13:22:38,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:38,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:22:38,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865406589] [2020-12-22 13:22:38,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:22:38,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:22:38,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:22:38,608 INFO L87 Difference]: Start difference. First operand 12605 states and 18444 transitions. Second operand 5 states. [2020-12-22 13:22:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:40,448 INFO L93 Difference]: Finished difference Result 37683 states and 55365 transitions. [2020-12-22 13:22:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:22:40,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 13:22:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:40,597 INFO L225 Difference]: With dead ends: 37683 [2020-12-22 13:22:40,598 INFO L226 Difference]: Without dead ends: 25135 [2020-12-22 13:22:40,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:22:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25135 states. [2020-12-22 13:22:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 25071. [2020-12-22 13:22:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25071 states. [2020-12-22 13:22:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 36784 transitions. [2020-12-22 13:22:41,613 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 36784 transitions. Word has length 54 [2020-12-22 13:22:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:41,615 INFO L481 AbstractCegarLoop]: Abstraction has 25071 states and 36784 transitions. [2020-12-22 13:22:41,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:22:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 36784 transitions. [2020-12-22 13:22:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 13:22:41,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:41,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:41,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:22:41,648 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2012061470, now seen corresponding path program 1 times [2020-12-22 13:22:41,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:41,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888362752] [2020-12-22 13:22:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:22:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888362752] [2020-12-22 13:22:42,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:42,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:22:42,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500313323] [2020-12-22 13:22:42,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:22:42,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:42,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:22:42,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:42,087 INFO L87 Difference]: Start difference. First operand 25071 states and 36784 transitions. Second operand 3 states. [2020-12-22 13:22:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:22:43,442 INFO L93 Difference]: Finished difference Result 71181 states and 105026 transitions. [2020-12-22 13:22:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:22:43,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-22 13:22:43,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:22:43,874 INFO L225 Difference]: With dead ends: 71181 [2020-12-22 13:22:43,874 INFO L226 Difference]: Without dead ends: 46175 [2020-12-22 13:22:43,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:22:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46175 states. [2020-12-22 13:22:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46175 to 46121. [2020-12-22 13:22:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46121 states. [2020-12-22 13:22:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46121 states to 46121 states and 68256 transitions. [2020-12-22 13:22:45,874 INFO L78 Accepts]: Start accepts. Automaton has 46121 states and 68256 transitions. Word has length 112 [2020-12-22 13:22:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:22:45,874 INFO L481 AbstractCegarLoop]: Abstraction has 46121 states and 68256 transitions. [2020-12-22 13:22:45,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:22:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 46121 states and 68256 transitions. [2020-12-22 13:22:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 13:22:45,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:22:45,946 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:22:45,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:22:45,947 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:22:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:22:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1636370595, now seen corresponding path program 1 times [2020-12-22 13:22:45,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:22:45,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072354739] [2020-12-22 13:22:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:22:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-12-22 13:22:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:46,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 13:22:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:46,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-12-22 13:22:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-22 13:22:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:22:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:22:46,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072354739] [2020-12-22 13:22:46,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:22:46,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:22:46,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804069787] [2020-12-22 13:22:46,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:22:46,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:22:46,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:22:46,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:22:46,674 INFO L87 Difference]: Start difference. First operand 46121 states and 68256 transitions. Second operand 5 states. [2020-12-22 13:23:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:09,669 INFO L93 Difference]: Finished difference Result 113939 states and 168666 transitions. [2020-12-22 13:23:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:23:09,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 13:23:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:10,233 INFO L225 Difference]: With dead ends: 113939 [2020-12-22 13:23:10,233 INFO L226 Difference]: Without dead ends: 67883 [2020-12-22 13:23:10,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:23:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67883 states. [2020-12-22 13:23:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67883 to 65471. [2020-12-22 13:23:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65471 states. [2020-12-22 13:23:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65471 states to 65471 states and 95922 transitions. [2020-12-22 13:23:13,260 INFO L78 Accepts]: Start accepts. Automaton has 65471 states and 95922 transitions. Word has length 138 [2020-12-22 13:23:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:13,262 INFO L481 AbstractCegarLoop]: Abstraction has 65471 states and 95922 transitions. [2020-12-22 13:23:13,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:23:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65471 states and 95922 transitions. [2020-12-22 13:23:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 13:23:13,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:13,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:23:13,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:23:13,317 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1329722284, now seen corresponding path program 1 times [2020-12-22 13:23:13,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:13,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754892865] [2020-12-22 13:23:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:23:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754892865] [2020-12-22 13:23:13,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:23:13,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:23:13,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775104352] [2020-12-22 13:23:13,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:23:13,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:13,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:23:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:23:13,861 INFO L87 Difference]: Start difference. First operand 65471 states and 95922 transitions. Second operand 4 states. [2020-12-22 13:23:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:18,159 INFO L93 Difference]: Finished difference Result 200804 states and 295039 transitions. [2020-12-22 13:23:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:23:18,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-12-22 13:23:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:18,875 INFO L225 Difference]: With dead ends: 200804 [2020-12-22 13:23:18,876 INFO L226 Difference]: Without dead ends: 135398 [2020-12-22 13:23:19,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:23:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135398 states. [2020-12-22 13:23:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135398 to 65567. [2020-12-22 13:23:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65567 states. [2020-12-22 13:23:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65567 states to 65567 states and 96018 transitions. [2020-12-22 13:23:22,871 INFO L78 Accepts]: Start accepts. Automaton has 65567 states and 96018 transitions. Word has length 137 [2020-12-22 13:23:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:22,872 INFO L481 AbstractCegarLoop]: Abstraction has 65567 states and 96018 transitions. [2020-12-22 13:23:22,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:23:22,872 INFO L276 IsEmpty]: Start isEmpty. Operand 65567 states and 96018 transitions. [2020-12-22 13:23:22,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 13:23:22,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:22,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:23:22,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:23:22,953 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:22,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1292596120, now seen corresponding path program 1 times [2020-12-22 13:23:22,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:22,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547846780] [2020-12-22 13:23:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:23:23,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547846780] [2020-12-22 13:23:23,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:23:23,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 13:23:23,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159489382] [2020-12-22 13:23:23,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:23:23,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:23,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:23:23,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:23:23,505 INFO L87 Difference]: Start difference. First operand 65567 states and 96018 transitions. Second operand 8 states. [2020-12-22 13:23:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:30,449 INFO L93 Difference]: Finished difference Result 200372 states and 294415 transitions. [2020-12-22 13:23:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:23:30,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-12-22 13:23:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:31,020 INFO L225 Difference]: With dead ends: 200372 [2020-12-22 13:23:31,020 INFO L226 Difference]: Without dead ends: 134870 [2020-12-22 13:23:31,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:23:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134870 states. [2020-12-22 13:23:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134870 to 65663. [2020-12-22 13:23:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65663 states. [2020-12-22 13:23:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65663 states to 65663 states and 96066 transitions. [2020-12-22 13:23:34,934 INFO L78 Accepts]: Start accepts. Automaton has 65663 states and 96066 transitions. Word has length 140 [2020-12-22 13:23:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:34,935 INFO L481 AbstractCegarLoop]: Abstraction has 65663 states and 96066 transitions. [2020-12-22 13:23:34,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:23:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 65663 states and 96066 transitions. [2020-12-22 13:23:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:23:35,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:35,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:23:35,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:23:35,020 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:35,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1702487821, now seen corresponding path program 1 times [2020-12-22 13:23:35,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:35,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516368597] [2020-12-22 13:23:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:23:35,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516368597] [2020-12-22 13:23:35,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361004541] [2020-12-22 13:23:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:23:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:38,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3507 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:23:38,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:23:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:23:38,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:23:38,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:23:38,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827862760] [2020-12-22 13:23:38,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:23:38,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:23:38,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:23:38,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:23:38,916 INFO L87 Difference]: Start difference. First operand 65663 states and 96066 transitions. Second operand 6 states. [2020-12-22 13:23:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:23:42,222 INFO L93 Difference]: Finished difference Result 131274 states and 192072 transitions. [2020-12-22 13:23:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:23:42,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-12-22 13:23:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:23:42,791 INFO L225 Difference]: With dead ends: 131274 [2020-12-22 13:23:42,791 INFO L226 Difference]: Without dead ends: 65666 [2020-12-22 13:23:43,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:23:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65666 states. [2020-12-22 13:23:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65666 to 65666. [2020-12-22 13:23:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65666 states. [2020-12-22 13:23:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65666 states to 65666 states and 96069 transitions. [2020-12-22 13:23:46,020 INFO L78 Accepts]: Start accepts. Automaton has 65666 states and 96069 transitions. Word has length 142 [2020-12-22 13:23:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:23:46,020 INFO L481 AbstractCegarLoop]: Abstraction has 65666 states and 96069 transitions. [2020-12-22 13:23:46,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:23:46,021 INFO L276 IsEmpty]: Start isEmpty. Operand 65666 states and 96069 transitions. [2020-12-22 13:23:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 13:23:46,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:23:46,059 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:23:46,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:23:46,273 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:23:46,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:23:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash 281574061, now seen corresponding path program 2 times [2020-12-22 13:23:46,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:23:46,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194666685] [2020-12-22 13:23:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:23:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:23:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:23:46,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194666685] [2020-12-22 13:23:46,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556722642] [2020-12-22 13:23:46,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:24:07,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:24:07,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:24:07,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:24:07,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:24:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:24:07,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:24:07,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:24:07,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997483355] [2020-12-22 13:24:07,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:24:07,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:24:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:24:07,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:24:07,790 INFO L87 Difference]: Start difference. First operand 65666 states and 96069 transitions. Second operand 8 states. [2020-12-22 13:24:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:24:10,066 INFO L93 Difference]: Finished difference Result 131269 states and 192063 transitions. [2020-12-22 13:24:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:24:10,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-12-22 13:24:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:24:10,354 INFO L225 Difference]: With dead ends: 131269 [2020-12-22 13:24:10,354 INFO L226 Difference]: Without dead ends: 65667 [2020-12-22 13:24:10,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:24:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65667 states. [2020-12-22 13:24:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65667 to 65667. [2020-12-22 13:24:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65667 states. [2020-12-22 13:24:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65667 states to 65667 states and 96070 transitions. [2020-12-22 13:24:13,013 INFO L78 Accepts]: Start accepts. Automaton has 65667 states and 96070 transitions. Word has length 145 [2020-12-22 13:24:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:24:13,014 INFO L481 AbstractCegarLoop]: Abstraction has 65667 states and 96070 transitions. [2020-12-22 13:24:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:24:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 65667 states and 96070 transitions. [2020-12-22 13:24:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 13:24:13,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:24:13,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:24:13,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:24:13,263 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:24:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:24:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2141111087, now seen corresponding path program 3 times [2020-12-22 13:24:13,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:24:13,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589315524] [2020-12-22 13:24:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:24:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:24:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 13:24:13,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589315524] [2020-12-22 13:24:13,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014753609] [2020-12-22 13:24:13,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:25:14,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 13:25:14,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:25:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-22 13:25:15,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:25:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 13:25:15,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:25:15,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2020-12-22 13:25:15,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656857591] [2020-12-22 13:25:15,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 13:25:15,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:25:15,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 13:25:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-12-22 13:25:15,838 INFO L87 Difference]: Start difference. First operand 65667 states and 96070 transitions. Second operand 13 states.