./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive/McCarthy91-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e87f89409ab3e763661ad617b0dadcb988e72d1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:43:35,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:43:35,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:43:35,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:43:35,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:43:35,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:43:35,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:43:35,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:43:35,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:43:35,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:43:35,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:43:35,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:43:35,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:43:35,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:43:35,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:43:35,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:43:35,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:43:35,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:43:35,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:43:35,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:43:35,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:43:35,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:43:35,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:43:35,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:43:35,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:43:35,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:43:35,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:43:35,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:43:35,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:43:35,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:43:35,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:43:35,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:43:35,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:43:35,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:43:35,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:43:35,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:43:35,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:43:35,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:43:35,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:43:35,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:43:35,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:43:35,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:43:35,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:43:35,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:43:35,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:43:35,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:43:35,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:43:35,892 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:43:35,893 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:43:35,893 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:43:35,893 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:43:35,894 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:43:35,896 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:43:35,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:43:35,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:43:35,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:43:35,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:43:35,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:43:35,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:43:35,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:43:35,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:43:35,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:43:35,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:43:35,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:43:35,900 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:43:35,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:43:35,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:43:35,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:43:35,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:43:35,901 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:43:35,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:43:35,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:43:35,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:43:35,903 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:43:35,906 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:43:35,907 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e87f89409ab3e763661ad617b0dadcb988e72d1 [2020-10-26 05:43:36,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:43:36,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:43:36,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:43:36,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:43:36,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:43:36,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-26 05:43:36,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40eeb3c34/42e32f973af54f099f168ecb0902ae8a/FLAGb23d33c15 [2020-10-26 05:43:37,291 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:43:37,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-26 05:43:37,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40eeb3c34/42e32f973af54f099f168ecb0902ae8a/FLAGb23d33c15 [2020-10-26 05:43:37,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40eeb3c34/42e32f973af54f099f168ecb0902ae8a [2020-10-26 05:43:37,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:43:37,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:43:37,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:37,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:43:37,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:43:37,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:37" (1/1) ... [2020-10-26 05:43:37,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ab9afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:37, skipping insertion in model container [2020-10-26 05:43:37,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:43:37" (1/1) ... [2020-10-26 05:43:37,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:43:37,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:43:38,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:38,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:43:38,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:43:38,078 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:43:38,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38 WrapperNode [2020-10-26 05:43:38,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:43:38,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:38,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:43:38,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:43:38,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:43:38,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:43:38,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:43:38,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:43:38,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (1/1) ... [2020-10-26 05:43:38,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:43:38,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:43:38,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:43:38,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:43:38,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:38,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:43:38,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:43:38,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:43:38,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:43:38,358 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-26 05:43:38,358 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-26 05:43:38,656 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:43:38,657 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:43:38,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:38 BoogieIcfgContainer [2020-10-26 05:43:38,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:43:38,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:43:38,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:43:38,666 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:43:38,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:38,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:43:37" (1/3) ... [2020-10-26 05:43:38,669 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6af93eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:38, skipping insertion in model container [2020-10-26 05:43:38,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:38,670 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:43:38" (2/3) ... [2020-10-26 05:43:38,670 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6af93eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:43:38, skipping insertion in model container [2020-10-26 05:43:38,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:43:38,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:38" (3/3) ... [2020-10-26 05:43:38,673 INFO L373 chiAutomizerObserver]: Analyzing ICFG McCarthy91-2.c [2020-10-26 05:43:38,794 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:43:38,796 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:43:38,797 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:43:38,797 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:43:38,797 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:43:38,797 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:43:38,797 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:43:38,798 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:43:38,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 05:43:38,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:38,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:38,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:38,867 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:43:38,867 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:38,867 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:43:38,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 05:43:38,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:38,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:38,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:38,872 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:43:38,872 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:38,882 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 11#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 6#L28true call main_#t~ret10 := f91(main_~x~0);< 18#f91ENTRYtrue [2020-10-26 05:43:38,882 INFO L796 eck$LassoCheckResult]: Loop: 18#f91ENTRYtrue ~x := #in~x; 5#L18true assume !(~x > 100); 19#L21true call #t~ret7 := f91(11 + ~x);< 18#f91ENTRYtrue [2020-10-26 05:43:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash 29879, now seen corresponding path program 1 times [2020-10-26 05:43:38,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:38,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035366089] [2020-10-26 05:43:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,129 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash 46807, now seen corresponding path program 1 times [2020-10-26 05:43:39,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:39,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446701987] [2020-10-26 05:43:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,188 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash 890142305, now seen corresponding path program 1 times [2020-10-26 05:43:39,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:39,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21637730] [2020-10-26 05:43:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,252 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:39,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:39,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:39,456 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:39,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:39,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:39,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:39,457 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:39,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:39,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:39,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2020-10-26 05:43:39,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:39,459 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:39,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:39,602 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:39,604 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:39,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,615 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:39,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:39,674 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:39,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:39,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:39,718 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:39,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,756 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:39,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:39,797 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:39,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:39,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:40,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:43:40,878 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:40,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:40,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:40,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:40,879 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:40,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:40,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:40,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:40,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration1_Loop [2020-10-26 05:43:40,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:40,879 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:40,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:40,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:40,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:40,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:40,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:40,946 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:40,954 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:40,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:40,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:40,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:40,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:40,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:40,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:40,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:40,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:40,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:41,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:41,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:41,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:41,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:41,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:41,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:41,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:41,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:41,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:41,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:41,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:41,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:41,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:41,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:41,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:41,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:41,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:41,164 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:41,213 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:41,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:41,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:41,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:41,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:41,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:41,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:41,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:41,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:41,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:41,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:41,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:41,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:41,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:41,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:41,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:41,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:41,261 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:41,278 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:43:41,278 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:41,284 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:41,285 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:41,285 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:41,286 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2020-10-26 05:43:41,311 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:41,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:43:41,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:41,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:43:41,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:41,533 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 05:43:41,535 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-10-26 05:43:41,686 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 35 states and 43 transitions. Complement of second has 12 states. [2020-10-26 05:43:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 05:43:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 05:43:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-26 05:43:41,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 05:43:41,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:41,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 05:43:41,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:41,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 05:43:41,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:41,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2020-10-26 05:43:41,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:41,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2020-10-26 05:43:41,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 05:43:41,726 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-26 05:43:41,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-26 05:43:41,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:41,733 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-26 05:43:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-26 05:43:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-26 05:43:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 05:43:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-10-26 05:43:41,799 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-26 05:43:41,799 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-10-26 05:43:41,799 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:43:41,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2020-10-26 05:43:41,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:43:41,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:41,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:41,809 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:41,809 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:41,809 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 105#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 106#L28 call main_#t~ret10 := f91(main_~x~0);< 116#f91ENTRY ~x := #in~x; 111#L18 assume !(~x > 100); 109#L21 call #t~ret7 := f91(11 + ~x);< 119#f91ENTRY ~x := #in~x; 108#L18 assume ~x > 100;#res := ~x - 10; 110#f91FINAL assume true; 117#f91EXIT >#29#return; 114#L21-1 [2020-10-26 05:43:41,809 INFO L796 eck$LassoCheckResult]: Loop: 114#L21-1 call #t~ret8 := f91(#t~ret7);< 118#f91ENTRY ~x := #in~x; 121#L18 assume !(~x > 100); 113#L21 call #t~ret7 := f91(11 + ~x);< 118#f91ENTRY ~x := #in~x; 121#L18 assume ~x > 100;#res := ~x - 10; 115#f91FINAL assume true; 120#f91EXIT >#29#return; 114#L21-1 [2020-10-26 05:43:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash -218206616, now seen corresponding path program 1 times [2020-10-26 05:43:41,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:41,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811044991] [2020-10-26 05:43:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:41,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1767505954, now seen corresponding path program 1 times [2020-10-26 05:43:41,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:41,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167154913] [2020-10-26 05:43:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:41,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1919740023, now seen corresponding path program 1 times [2020-10-26 05:43:41,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:41,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507844599] [2020-10-26 05:43:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:41,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:41,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:42,133 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:42,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:42,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:42,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:42,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:42,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:42,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:42,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:42,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2020-10-26 05:43:42,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:42,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:42,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:42,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:42,247 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,263 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:42,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:42,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:42,318 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:42,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:42,397 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:54,471 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-26 05:43:54,478 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:54,478 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:54,478 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:54,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:54,478 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:43:54,478 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:54,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:54,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:54,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration2_Loop [2020-10-26 05:43:54,479 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:54,479 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:54,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:54,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:54,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:54,556 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:54,556 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:54,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:43:54,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:54,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:54,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:54,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:54,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:54,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:54,576 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:54,581 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:54,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:54,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:43:54,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:43:54,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:43:54,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:43:54,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:43:54,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:43:54,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:43:54,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:43:54,648 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:43:54,648 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:54,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:43:54,660 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:43:54,660 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:43:54,661 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret7) = -2*f91_#t~ret7 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:54,703 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:43:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:54,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 05:43:54,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:54,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:43:54,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:43:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:43:55,144 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:43:55,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand 9 states. [2020-10-26 05:43:55,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 51 states and 73 transitions. Complement of second has 32 states. [2020-10-26 05:43:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-26 05:43:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:43:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-10-26 05:43:55,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2020-10-26 05:43:55,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:55,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2020-10-26 05:43:55,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:55,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2020-10-26 05:43:55,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:43:55,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2020-10-26 05:43:55,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 05:43:55,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2020-10-26 05:43:55,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-26 05:43:55,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-26 05:43:55,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2020-10-26 05:43:55,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:43:55,597 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 62 transitions. [2020-10-26 05:43:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2020-10-26 05:43:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-26 05:43:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 05:43:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-10-26 05:43:55,615 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-26 05:43:55,615 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-10-26 05:43:55,615 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 05:43:55,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2020-10-26 05:43:55,620 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 05:43:55,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:43:55,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:43:55,622 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:43:55,622 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:43:55,623 INFO L794 eck$LassoCheckResult]: Stem: 293#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 291#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 292#L28 call main_#t~ret10 := f91(main_~x~0);< 298#f91ENTRY ~x := #in~x; 296#L18 assume !(~x > 100); 297#L21 call #t~ret7 := f91(11 + ~x);< 316#f91ENTRY ~x := #in~x; 317#L18 assume ~x > 100;#res := ~x - 10; 308#f91FINAL assume true; 309#f91EXIT >#29#return; 301#L21-1 call #t~ret8 := f91(#t~ret7);< 314#f91ENTRY ~x := #in~x; 326#L18 assume !(~x > 100); 295#L21 [2020-10-26 05:43:55,624 INFO L796 eck$LassoCheckResult]: Loop: 295#L21 call #t~ret7 := f91(11 + ~x);< 315#f91ENTRY ~x := #in~x; 294#L18 assume !(~x > 100); 295#L21 [2020-10-26 05:43:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1987218266, now seen corresponding path program 2 times [2020-10-26 05:43:55,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:55,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647378886] [2020-10-26 05:43:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:55,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:55,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:55,696 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 57247, now seen corresponding path program 2 times [2020-10-26 05:43:55,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:55,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647839607] [2020-10-26 05:43:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:55,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:43:55,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:43:55,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:43:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:43:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash -609818202, now seen corresponding path program 3 times [2020-10-26 05:43:55,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:43:55,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919387188] [2020-10-26 05:43:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:43:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-26 05:43:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:43:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 05:43:55,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919387188] [2020-10-26 05:43:55,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:43:55,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 05:43:55,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910759355] [2020-10-26 05:43:55,895 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:43:55,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:43:55,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:43:55,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:43:55,895 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:43:55,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:55,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:43:55,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:43:55,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2020-10-26 05:43:55,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:43:55,896 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:43:55,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:55,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:55,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:55,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:43:55,973 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:43:55,974 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:55,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:55,986 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:55,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:55,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:56,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:56,033 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:56,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:56,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret8=0} Honda state: {f91_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:56,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:56,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:43:56,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:43:56,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:43:56,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:43:56,101 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:43:56,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:43:56,161 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,228 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-10-26 05:44:08,232 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:08,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:08,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:08,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:08,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:08,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:08,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:08,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration3_Loop [2020-10-26 05:44:08,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:08,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:08,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:08,337 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:08,338 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:08,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:08,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,363 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,363 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:08,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:08,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,425 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:08,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:08,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:08,519 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:08,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:08,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:08,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:08,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:08,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:08,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:08,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,531 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:08,536 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:08,536 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:08,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:08,540 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:08,540 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:08,541 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:08,577 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:08,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:08,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:08,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:08,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:08,763 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:44:08,763 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:08,887 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-26 05:44:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-26 05:44:08,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:08,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:08,891 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:08,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:08,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:09,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:09,046 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:44:09,046 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:09,144 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 43 states and 59 transitions. Complement of second has 13 states. [2020-10-26 05:44:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2020-10-26 05:44:09,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:09,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:09,146 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 05:44:09,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:44:09,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:09,343 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 05:44:09,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-26 05:44:09,491 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 71 states and 100 transitions. Complement of second has 16 states. [2020-10-26 05:44:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 05:44:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-26 05:44:09,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 05:44:09,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:09,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-26 05:44:09,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:09,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-26 05:44:09,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:09,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2020-10-26 05:44:09,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 05:44:09,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2020-10-26 05:44:09,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-10-26 05:44:09,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-26 05:44:09,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-26 05:44:09,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:09,507 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-26 05:44:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-26 05:44:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-26 05:44:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 05:44:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-10-26 05:44:09,515 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-10-26 05:44:09,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:44:09,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 05:44:09,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 05:44:09,521 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand 8 states. [2020-10-26 05:44:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:44:09,735 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-10-26 05:44:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 05:44:09,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2020-10-26 05:44:09,745 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-26 05:44:09,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2020-10-26 05:44:09,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-26 05:44:09,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2020-10-26 05:44:09,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2020-10-26 05:44:09,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:09,759 INFO L691 BuchiCegarLoop]: Abstraction has 58 states and 75 transitions. [2020-10-26 05:44:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2020-10-26 05:44:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-26 05:44:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 05:44:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-10-26 05:44:09,779 INFO L714 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-26 05:44:09,780 INFO L594 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-10-26 05:44:09,780 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 05:44:09,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2020-10-26 05:44:09,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-10-26 05:44:09,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:09,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:09,787 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-26 05:44:09,790 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2020-10-26 05:44:09,792 INFO L794 eck$LassoCheckResult]: Stem: 839#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 837#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 838#L28 call main_#t~ret10 := f91(main_~x~0);< 851#f91ENTRY ~x := #in~x; 883#L18 assume !(~x > 100); 866#L21 call #t~ret7 := f91(11 + ~x);< 867#f91ENTRY ~x := #in~x; 876#L18 assume !(~x > 100); 872#L21 call #t~ret7 := f91(11 + ~x);< 874#f91ENTRY ~x := #in~x; 877#L18 assume ~x > 100;#res := ~x - 10; 875#f91FINAL assume true; 873#f91EXIT >#29#return; 849#L21-1 call #t~ret8 := f91(#t~ret7);< 861#f91ENTRY ~x := #in~x; 891#L18 assume ~x > 100;#res := ~x - 10; 890#f91FINAL assume true; 887#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 853#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-26 05:44:09,793 INFO L796 eck$LassoCheckResult]: Loop: 882#f91ENTRY ~x := #in~x; 879#L18 assume !(~x > 100); 841#L21 call #t~ret7 := f91(11 + ~x);< 865#f91ENTRY ~x := #in~x; 844#L18 assume !(~x > 100); 842#L21 call #t~ret7 := f91(11 + ~x);< 878#f91ENTRY ~x := #in~x; 840#L18 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 893#f91EXIT >#29#return; 846#L21-1 call #t~ret8 := f91(#t~ret7);< 859#f91ENTRY ~x := #in~x; 880#L18 assume ~x > 100;#res := ~x - 10; 881#f91FINAL assume true; 886#f91EXIT >#31#return; 868#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 885#f91FINAL assume true; 884#f91EXIT >#29#return; 854#L21-1 call #t~ret8 := f91(#t~ret7);< 882#f91ENTRY [2020-10-26 05:44:09,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash -834951989, now seen corresponding path program 1 times [2020-10-26 05:44:09,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:09,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945270128] [2020-10-26 05:44:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:09,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:09,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:09,875 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash -871747263, now seen corresponding path program 1 times [2020-10-26 05:44:09,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:09,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46374115] [2020-10-26 05:44:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:09,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:09,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:09,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:09,928 INFO L82 PathProgramCache]: Analyzing trace with hash 418853943, now seen corresponding path program 2 times [2020-10-26 05:44:09,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:09,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039922963] [2020-10-26 05:44:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-26 05:44:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-26 05:44:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 05:44:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 05:44:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-26 05:44:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 05:44:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 05:44:10,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039922963] [2020-10-26 05:44:10,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011930430] [2020-10-26 05:44:10,144 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 05:44:10,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 05:44:10,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 05:44:10,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 05:44:10,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 05:44:10,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 05:44:10,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-26 05:44:10,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406045029] [2020-10-26 05:44:10,669 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:10,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:10,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:10,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:10,670 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:44:10,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:10,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:10,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2020-10-26 05:44:10,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:10,670 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:10,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:10,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:10,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:10,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:10,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:10,768 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:10,770 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:10,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:10,785 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:10,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret7=0} Honda state: {f91_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:10,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:10,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:10,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:10,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:10,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:10,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:10,884 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:10,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:44:10,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:44:11,611 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:44:11,613 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:11,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:11,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:11,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:11,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:11,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:11,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:11,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration4_Loop [2020-10-26 05:44:11,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:11,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:11,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:11,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:11,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:11,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:11,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:11,682 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:11,682 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:11,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:11,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:11,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:11,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:11,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:11,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:11,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:11,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,700 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:11,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:11,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:11,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:11,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:11,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:11,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:11,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:11,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,756 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:11,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:11,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:11,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:11,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:11,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:11,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:11,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:11,795 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,823 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:11,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:11,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:11,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:11,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:11,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:11,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:11,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:11,830 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:11,833 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:11,833 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:11,837 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:11,837 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:11,838 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:11,838 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2020-10-26 05:44:11,862 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:11,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:11,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:12,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:12,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:12,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-26 05:44:12,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 05:44:12,307 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-26 05:44:12,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-26 05:44:13,069 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2020-10-26 05:44:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 05:44:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2020-10-26 05:44:13,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:13,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:13,075 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:13,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:13,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-26 05:44:13,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 05:44:13,547 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-26 05:44:13,547 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 12 states. [2020-10-26 05:44:14,260 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 125 states and 150 transitions. Complement of second has 47 states. [2020-10-26 05:44:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 05:44:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 34 transitions. [2020-10-26 05:44:14,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 34 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:14,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:14,265 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:14,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 05:44:14,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:14,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:14,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:14,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:14,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 05:44:14,630 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2020-10-26 05:44:14,630 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand 11 states. [2020-10-26 05:44:15,747 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand 11 states. Result 325 states and 417 transitions. Complement of second has 123 states. [2020-10-26 05:44:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 2 stem states 15 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 05:44:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 49 transitions. [2020-10-26 05:44:15,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 19 letters. [2020-10-26 05:44:15,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 41 letters. Loop has 19 letters. [2020-10-26 05:44:15,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 49 transitions. Stem has 22 letters. Loop has 38 letters. [2020-10-26 05:44:15,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:15,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 325 states and 417 transitions. [2020-10-26 05:44:15,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2020-10-26 05:44:15,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 325 states to 169 states and 230 transitions. [2020-10-26 05:44:15,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2020-10-26 05:44:15,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2020-10-26 05:44:15,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 230 transitions. [2020-10-26 05:44:15,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:15,802 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 230 transitions. [2020-10-26 05:44:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 230 transitions. [2020-10-26 05:44:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-10-26 05:44:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-26 05:44:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 178 transitions. [2020-10-26 05:44:15,846 INFO L714 BuchiCegarLoop]: Abstraction has 140 states and 178 transitions. [2020-10-26 05:44:15,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:44:15,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 05:44:15,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-26 05:44:15,851 INFO L87 Difference]: Start difference. First operand 140 states and 178 transitions. Second operand 10 states. [2020-10-26 05:44:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:44:16,226 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-10-26 05:44:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 05:44:16,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 163 transitions. [2020-10-26 05:44:16,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:44:16,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 101 states and 121 transitions. [2020-10-26 05:44:16,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2020-10-26 05:44:16,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2020-10-26 05:44:16,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 121 transitions. [2020-10-26 05:44:16,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:16,249 INFO L691 BuchiCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-26 05:44:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 121 transitions. [2020-10-26 05:44:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-10-26 05:44:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 05:44:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2020-10-26 05:44:16,270 INFO L714 BuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-26 05:44:16,272 INFO L594 BuchiCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-26 05:44:16,272 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 05:44:16,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 117 transitions. [2020-10-26 05:44:16,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 05:44:16,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:16,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:16,279 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-26 05:44:16,279 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-26 05:44:16,280 INFO L794 eck$LassoCheckResult]: Stem: 2644#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2642#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~ret10, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet9;havoc main_#t~nondet9; 2643#L28 call main_#t~ret10 := f91(main_~x~0);< 2656#f91ENTRY ~x := #in~x; 2649#L18 assume !(~x > 100); 2650#L21 call #t~ret7 := f91(11 + ~x);< 2668#f91ENTRY ~x := #in~x; 2670#L18 assume !(~x > 100); 2669#L21 call #t~ret7 := f91(11 + ~x);< 2698#f91ENTRY ~x := #in~x; 2700#L18 assume ~x > 100;#res := ~x - 10; 2699#f91FINAL assume true; 2697#f91EXIT >#29#return; 2693#L21-1 call #t~ret8 := f91(#t~ret7);< 2696#f91ENTRY ~x := #in~x; 2709#L18 assume ~x > 100;#res := ~x - 10; 2701#f91FINAL assume true; 2692#f91EXIT >#31#return; 2691#L21-2 #res := #t~ret8;havoc #t~ret7;havoc #t~ret8; 2689#f91FINAL assume true; 2688#f91EXIT >#29#return; 2682#L21-1 call #t~ret8 := f91(#t~ret7);< 2687#f91ENTRY ~x := #in~x; 2685#L18 assume !(~x > 100); 2663#L21 call #t~ret7 := f91(11 + ~x);< 2684#f91ENTRY ~x := #in~x; 2708#L18 assume ~x > 100;#res := ~x - 10; 2707#f91FINAL assume true; 2706#f91EXIT >#29#return; 2704#L21-1 call #t~ret8 := f91(#t~ret7);< 2705#f91ENTRY ~x := #in~x; 2720#L18 assume !(~x > 100); 2721#L21 call #t~ret7 := f91(11 + ~x);< 2672#f91ENTRY ~x := #in~x; 2738#L18 assume ~x > 100;#res := ~x - 10; 2736#f91FINAL assume true; 2729#f91EXIT >#29#return; 2654#L21-1 call #t~ret8 := f91(#t~ret7);< 2728#f91ENTRY [2020-10-26 05:44:16,280 INFO L796 eck$LassoCheckResult]: Loop: 2728#f91ENTRY ~x := #in~x; 2732#L18 assume !(~x > 100); 2730#L21 call #t~ret7 := f91(11 + ~x);< 2672#f91ENTRY ~x := #in~x; 2738#L18 assume ~x > 100;#res := ~x - 10; 2736#f91FINAL assume true; 2729#f91EXIT >#29#return; 2653#L21-1 call #t~ret8 := f91(#t~ret7);< 2728#f91ENTRY [2020-10-26 05:44:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1139827145, now seen corresponding path program 3 times [2020-10-26 05:44:16,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:16,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269411748] [2020-10-26 05:44:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,361 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash 31195136, now seen corresponding path program 2 times [2020-10-26 05:44:16,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:16,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099260893] [2020-10-26 05:44:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,370 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:16,370 INFO L82 PathProgramCache]: Analyzing trace with hash 424810952, now seen corresponding path program 4 times [2020-10-26 05:44:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:16,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336561388] [2020-10-26 05:44:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:16,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:16,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:16,514 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:16,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:16,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:16,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:16,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:44:16,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:16,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:16,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2020-10-26 05:44:16,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:16,515 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:16,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,587 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:16,588 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:16,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:16,594 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:16,598 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:16,627 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:16,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:44:16,660 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,664 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:44:16,689 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:16,690 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:16,690 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:16,690 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:16,690 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:16,690 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,690 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:16,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:16,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthy91-2.c_Iteration5_Loop [2020-10-26 05:44:16,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:16,690 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:16,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:16,772 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:16,772 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:16,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:16,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:16,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:16,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:16,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:16,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:16,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:16,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,788 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:44:16,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:16,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:16,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:16,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:16,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:16,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:16,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:16,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:16,834 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:44:16,834 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:16,837 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:16,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:16,838 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:44:16,838 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 201 Supporting invariants [] [2020-10-26 05:44:16,868 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:16,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:16,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:17,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:17,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:17,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:17,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:17,232 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:17,233 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:17,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 107 states and 127 transitions. Complement of second has 12 states. [2020-10-26 05:44:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-26 05:44:17,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:17,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:17,427 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:17,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:17,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:17,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:17,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:17,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:17,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:17,765 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:17,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:18,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 125 states and 146 transitions. Complement of second has 24 states. [2020-10-26 05:44:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2020-10-26 05:44:18,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:18,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:18,222 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:18,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:18,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:18,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:18,376 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:18,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:18,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:18,550 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:18,550 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:18,755 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 147 states and 167 transitions. Complement of second has 13 states. [2020-10-26 05:44:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-10-26 05:44:18,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:18,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:18,759 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 05:44:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:18,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 05:44:18,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:18,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:18,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 05:44:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:18,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 05:44:18,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:19,122 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2020-10-26 05:44:19,122 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24 Second operand 9 states. [2020-10-26 05:44:19,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 117 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 182 states and 209 transitions. Complement of second has 48 states. [2020-10-26 05:44:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-26 05:44:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 05:44:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 27 transitions. [2020-10-26 05:44:19,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 8 letters. [2020-10-26 05:44:19,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:19,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 46 letters. Loop has 8 letters. [2020-10-26 05:44:19,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:19,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 27 transitions. Stem has 38 letters. Loop has 16 letters. [2020-10-26 05:44:19,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:19,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 209 transitions. [2020-10-26 05:44:19,744 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:19,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 0 states and 0 transitions. [2020-10-26 05:44:19,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:44:19,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:44:19,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:44:19,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:44:19,746 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:19,746 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:19,746 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:19,746 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 05:44:19,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:44:19,747 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:19,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:44:19,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:44:19 BoogieIcfgContainer [2020-10-26 05:44:19,757 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:44:19,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:44:19,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:44:19,758 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:44:19,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:43:38" (3/4) ... [2020-10-26 05:44:19,764 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:44:19,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:44:19,767 INFO L168 Benchmark]: Toolchain (without parser) took 42129.00 ms. Allocated memory was 44.0 MB in the beginning and 98.6 MB in the end (delta: 54.5 MB). Free memory was 19.4 MB in the beginning and 67.3 MB in the end (delta: -48.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,768 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 44.0 MB. Free memory was 24.8 MB in the beginning and 24.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:19,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.52 ms. Allocated memory is still 44.0 MB. Free memory was 29.9 MB in the beginning and 23.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 40.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,771 INFO L168 Benchmark]: Boogie Preprocessor took 71.71 ms. Allocated memory is still 54.5 MB. Free memory was 40.4 MB in the beginning and 39.4 MB in the end (delta: 921.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,772 INFO L168 Benchmark]: RCFGBuilder took 433.25 ms. Allocated memory is still 54.5 MB. Free memory was 39.2 MB in the beginning and 28.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,773 INFO L168 Benchmark]: BuchiAutomizer took 41096.00 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 28.4 MB in the beginning and 67.3 MB in the end (delta: -39.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:19,773 INFO L168 Benchmark]: Witness Printer took 7.04 ms. Allocated memory is still 98.6 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:19,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 44.0 MB. Free memory was 24.8 MB in the beginning and 24.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 423.52 ms. Allocated memory is still 44.0 MB. Free memory was 29.9 MB in the beginning and 23.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 40.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.71 ms. Allocated memory is still 54.5 MB. Free memory was 40.4 MB in the beginning and 39.4 MB in the end (delta: 921.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 433.25 ms. Allocated memory is still 54.5 MB. Free memory was 39.2 MB in the beginning and 28.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 41096.00 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 28.4 MB in the beginning and 67.3 MB in the end (delta: -39.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.04 ms. Allocated memory is still 98.6 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 18 locations. One nondeterministic module has affine ranking function -2 * \old(x) + 201 and consists of 11 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.0s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 30.9s. Construction of modules took 1.4s. Büchi inclusion checks took 8.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 97 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/24 HoareTripleCheckerStatistics: 181 SDtfs, 296 SDslu, 190 SDs, 0 SdLazy, 829 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf110 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 26.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...