./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer --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 64bit --witnessprinter.graph.data.programhash dd635190a9aa277670265f46b90ecce0c321a2a9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:28:36,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:28:36,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:28:36,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:28:36,923 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:28:36,923 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:28:36,924 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:28:36,925 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:28:36,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:28:36,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:28:36,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:28:36,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:28:36,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:28:36,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:28:36,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:28:36,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:28:36,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:28:36,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:28:36,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:28:36,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:28:36,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:28:36,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:28:36,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:28:36,937 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:28:36,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:28:36,938 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:28:36,939 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:28:36,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:28:36,939 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:28:36,940 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:28:36,940 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:28:36,940 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:28:36,940 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:28:36,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:28:36,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:28:36,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:28:36,942 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-22 22:28:36,949 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:28:36,949 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:28:36,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 22:28:36,950 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 22:28:36,950 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 22:28:36,951 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-22 22:28:36,951 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-22 22:28:36,951 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-22 22:28:36,951 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-22 22:28:36,951 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-22 22:28:36,951 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-22 22:28:36,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:28:36,952 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-22 22:28:36,956 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:28:36,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-22 22:28:36,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:28:36,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:28:36,957 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-22 22:28:36,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:28:36,957 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 22:28:36,957 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-22 22:28:36,958 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-22 22:28:36,958 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2018-11-22 22:28:36,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:28:36,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:28:36,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:28:36,996 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:28:36,997 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:28:36,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-22 22:28:37,041 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/data/143196761/a8093fbb5c8a40ccae996a318c85dcda/FLAG0848bfe31 [2018-11-22 22:28:37,435 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:28:37,435 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/sv-benchmarks/c/termination-numeric/TwoWay_true-termination_true-no-overflow.c [2018-11-22 22:28:37,439 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/data/143196761/a8093fbb5c8a40ccae996a318c85dcda/FLAG0848bfe31 [2018-11-22 22:28:37,448 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/data/143196761/a8093fbb5c8a40ccae996a318c85dcda [2018-11-22 22:28:37,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:28:37,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:28:37,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:28:37,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:28:37,454 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:28:37,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f711c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37, skipping insertion in model container [2018-11-22 22:28:37,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:28:37,475 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:28:37,577 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:28:37,579 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:28:37,587 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:28:37,595 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:28:37,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37 WrapperNode [2018-11-22 22:28:37,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:28:37,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:28:37,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:28:37,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:28:37,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:28:37,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:28:37,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:28:37,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:28:37,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... [2018-11-22 22:28:37,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:28:37,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:28:37,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:28:37,626 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:28:37,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2018-11-22 22:28:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2018-11-22 22:28:37,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:28:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:28:37,811 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:28:37,811 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-22 22:28:37,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:37 BoogieIcfgContainer [2018-11-22 22:28:37,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:28:37,812 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-22 22:28:37,812 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-22 22:28:37,815 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-22 22:28:37,816 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:28:37,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 10:28:37" (1/3) ... [2018-11-22 22:28:37,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c11cbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 10:28:37, skipping insertion in model container [2018-11-22 22:28:37,817 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:28:37,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:37" (2/3) ... [2018-11-22 22:28:37,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c11cbe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 10:28:37, skipping insertion in model container [2018-11-22 22:28:37,818 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:28:37,818 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:37" (3/3) ... [2018-11-22 22:28:37,819 INFO L375 chiAutomizerObserver]: Analyzing ICFG TwoWay_true-termination_true-no-overflow.c [2018-11-22 22:28:37,859 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 22:28:37,859 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-22 22:28:37,859 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-22 22:28:37,859 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-22 22:28:37,860 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:28:37,860 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:28:37,860 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-22 22:28:37,860 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:28:37,860 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-22 22:28:37,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-22 22:28:37,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 22:28:37,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:28:37,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:28:37,895 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-22 22:28:37,895 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-22 22:28:37,895 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-22 22:28:37,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-22 22:28:37,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 22:28:37,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:28:37,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:28:37,897 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-22 22:28:37,897 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-22 22:28:37,903 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 9#L42true assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 15#L45true assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L48true call main_#t~ret6 := twoWay(1, main_~x~0);< 11#twoWayENTRYtrue [2018-11-22 22:28:37,903 INFO L796 eck$LassoCheckResult]: Loop: 11#twoWayENTRYtrue ~terminate := #in~terminate;~n := #in~n; 17#L27true assume !(~n < 0);~m~0 := ~n; 8#L31true assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 6#L31-2true call #t~ret2 := twoWay(~terminate, ~m~0);< 11#twoWayENTRYtrue [2018-11-22 22:28:37,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1390414, now seen corresponding path program 1 times [2018-11-22 22:28:37,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:28:37,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:28:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:37,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash 927613, now seen corresponding path program 1 times [2018-11-22 22:28:37,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:28:37,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:28:37,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:37,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:37,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:37,990 INFO L82 PathProgramCache]: Analyzing trace with hash -118689718, now seen corresponding path program 1 times [2018-11-22 22:28:37,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:28:37,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:28:37,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:37,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:38,119 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:28:38,120 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:28:38,120 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:28:38,120 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:28:38,120 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:28:38,120 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:38,120 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:28:38,121 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:28:38,121 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-22 22:28:38,121 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:28:38,121 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:28:38,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,252 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:28:38,252 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:38,258 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:38,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:38,265 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:38,266 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:38,283 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:38,283 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:38,285 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:38,285 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~m~0=0} Honda state: {twoWay_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:38,302 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:38,302 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:38,305 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:38,305 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:38,319 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:38,319 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:38,321 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:38,321 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~n=0} Honda state: {twoWay_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:38,336 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:38,336 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:38,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:28:38,353 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:38,392 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:28:38,394 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:28:38,394 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:28:38,394 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:28:38,394 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:28:38,394 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:28:38,394 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:38,394 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:28:38,394 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:28:38,394 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-22 22:28:38,394 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:28:38,394 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:28:38,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,475 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:28:38,478 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:28:38,479 INFO L122 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 [2018-11-22 22:28:38,480 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:38,480 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:38,481 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:38,481 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:38,481 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:38,483 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:38,483 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:38,486 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:38,486 INFO L122 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 [2018-11-22 22:28:38,487 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:38,487 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:38,487 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:38,487 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:38,487 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:38,488 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:38,488 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:38,489 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:38,489 INFO L122 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 [2018-11-22 22:28:38,490 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:38,490 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:38,490 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:38,490 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:38,490 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:38,491 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:38,491 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:38,495 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:28:38,498 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 22:28:38,498 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-22 22:28:38,500 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:28:38,500 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 22:28:38,500 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:28:38,501 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_#in~n) = 2*twoWay_#in~n + 1 Supporting invariants [] [2018-11-22 22:28:38,502 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 22:28:38,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:38,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:28:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:38,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:28:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:38,646 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-22 22:28:38,647 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2018-11-22 22:28:38,786 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 44 states and 56 transitions. Complement of second has 16 states. [2018-11-22 22:28:38,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-22 22:28:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-22 22:28:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2018-11-22 22:28:38,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-22 22:28:38,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:38,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-22 22:28:38,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:38,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-22 22:28:38,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:38,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2018-11-22 22:28:38,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 22:28:38,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 22 states and 25 transitions. [2018-11-22 22:28:38,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-22 22:28:38,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-22 22:28:38,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-11-22 22:28:38,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:28:38,801 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-22 22:28:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-11-22 22:28:38,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2018-11-22 22:28:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-22 22:28:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-22 22:28:38,820 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-22 22:28:38,821 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-22 22:28:38,821 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-22 22:28:38,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-22 22:28:38,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 22:28:38,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:28:38,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:28:38,822 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:28:38,822 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-22 22:28:38,822 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L42 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 126#L45 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 128#L48 call main_#t~ret6 := twoWay(1, main_~x~0);< 129#twoWayENTRY ~terminate := #in~terminate;~n := #in~n; 136#L27 assume !(~n < 0);~m~0 := ~n; 137#L31 assume !(0 != ~terminate);#t~post1 := ~m~0;~m~0 := 1 + #t~post1;havoc #t~post1; 131#L31-2 [2018-11-22 22:28:38,822 INFO L796 eck$LassoCheckResult]: Loop: 131#L31-2 call #t~ret2 := twoWay(~terminate, ~m~0);< 130#twoWayENTRY ~terminate := #in~terminate;~n := #in~n; 132#L27 assume !(~n < 0);~m~0 := ~n; 139#L31 assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 131#L31-2 [2018-11-22 22:28:38,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1527849353, now seen corresponding path program 1 times [2018-11-22 22:28:38,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:28:38,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:28:38,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:38,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:38,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:38,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:28:38,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 22:28:38,870 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-22 22:28:38,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:38,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1847173, now seen corresponding path program 2 times [2018-11-22 22:28:38,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:28:38,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:28:38,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:38,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:28:38,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:28:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:28:38,949 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:28:38,949 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:28:38,949 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:28:38,949 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:28:38,950 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:28:38,950 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:38,950 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:28:38,950 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:28:38,950 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 22:28:38,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:28:38,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:28:38,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:38,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:39,054 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:28:39,054 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:39,056 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,056 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:39,061 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:39,061 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:39,078 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,078 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:39,081 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:39,081 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post0=0} Honda state: {twoWay_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:39,096 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:39,098 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:39,098 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post1=0} Honda state: {twoWay_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:39,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:39,114 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:39,114 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:39,129 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,129 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:39,133 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:28:39,133 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#in~terminate=7, twoWay_~terminate=7} Honda state: {twoWay_#in~terminate=7, twoWay_~terminate=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/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 [2018-11-22 22:28:39,151 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:28:39,151 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0546345c-030e-47d4-b94d-12292fee758e/bin-2019/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:39,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:28:39,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:28:51,192 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-22 22:28:51,194 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:28:51,194 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:28:51,194 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:28:51,194 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:28:51,194 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:28:51,195 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:28:51,195 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:28:51,195 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:28:51,195 INFO L131 ssoRankerPreferences]: Filename of dumped script: TwoWay_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 22:28:51,195 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:28:51,195 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:28:51,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:28:51,274 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:28:51,274 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:28:51,275 INFO L122 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 [2018-11-22 22:28:51,276 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,276 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:51,277 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,277 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:51,277 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,278 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:51,278 INFO L122 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 [2018-11-22 22:28:51,279 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,279 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,279 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,279 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:51,279 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,280 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:51,280 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,281 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:51,281 INFO L122 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 [2018-11-22 22:28:51,281 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,283 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,283 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,283 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-22 22:28:51,283 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,284 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-22 22:28:51,284 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,291 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:51,291 INFO L122 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 [2018-11-22 22:28:51,291 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,291 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,292 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,292 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:51,292 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,292 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:51,292 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,293 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:51,293 INFO L122 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 [2018-11-22 22:28:51,294 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,294 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,294 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,294 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:51,294 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,295 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:51,295 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,296 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:28:51,296 INFO L122 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 [2018-11-22 22:28:51,296 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:28:51,297 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:28:51,297 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:28:51,297 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:28:51,297 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:28:51,298 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:28:51,298 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:28:51,302 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:28:51,306 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 22:28:51,306 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-22 22:28:51,306 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:28:51,306 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 22:28:51,307 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:28:51,307 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_~m~0) = 2*twoWay_~m~0 + 1 Supporting invariants [] [2018-11-22 22:28:51,307 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 22:28:51,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:28:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:51,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:28:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:28:51,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:28:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:28:51,362 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-22 22:28:51,363 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-11-22 22:28:51,425 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 11 states. [2018-11-22 22:28:51,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-22 22:28:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-22 22:28:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-22 22:28:51,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-22 22:28:51,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:51,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-22 22:28:51,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:51,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-22 22:28:51,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:28:51,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-11-22 22:28:51,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-22 22:28:51,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2018-11-22 22:28:51,430 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-22 22:28:51,430 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-22 22:28:51,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-11-22 22:28:51,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:28:51,430 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-22 22:28:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-11-22 22:28:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-22 22:28:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-22 22:28:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-22 22:28:51,434 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-22 22:28:51,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:28:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:28:51,437 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2018-11-22 22:28:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:28:51,447 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-22 22:28:51,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 22:28:51,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-22 22:28:51,449 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 22:28:51,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-22 22:28:51,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 22:28:51,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 22:28:51,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 22:28:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 22:28:51,450 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:28:51,450 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:28:51,450 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:28:51,450 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-22 22:28:51,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:28:51,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 22:28:51,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-22 22:28:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 10:28:51 BoogieIcfgContainer [2018-11-22 22:28:51,455 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-22 22:28:51,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:28:51,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:28:51,455 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:28:51,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:37" (3/4) ... [2018-11-22 22:28:51,458 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 22:28:51,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:28:51,458 INFO L168 Benchmark]: Toolchain (without parser) took 14008.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 959.1 MB in the beginning and 872.8 MB in the end (delta: 86.3 MB). Peak memory consumption was 234.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:51,459 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:28:51,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:51,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.03 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:51,460 INFO L168 Benchmark]: Boogie Preprocessor took 10.63 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:28:51,460 INFO L168 Benchmark]: RCFGBuilder took 185.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:51,461 INFO L168 Benchmark]: BuchiAutomizer took 13642.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.8 MB in the end (delta: 258.8 MB). Peak memory consumption was 258.8 MB. Max. memory is 11.5 GB. [2018-11-22 22:28:51,461 INFO L168 Benchmark]: Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 872.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:28:51,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.03 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.63 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 185.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 13642.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 872.8 MB in the end (delta: 258.8 MB). Peak memory consumption was 258.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.97 ms. Allocated memory is still 1.2 GB. Free memory is still 872.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * \old(n) + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + 1 and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 13.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 29 SDslu, 9 SDs, 0 SdLazy, 47 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp100 dnf137 smp100 tf106 neg93 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...