./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 0.1.25-f470102 [2019-12-07 11:15:56,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:15:56,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:15:56,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:15:56,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:15:56,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:15:56,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:15:56,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:15:56,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:15:56,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:15:56,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:15:56,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:15:56,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:15:56,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:15:56,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:15:56,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:15:56,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:15:56,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:15:56,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:15:56,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:15:56,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:15:56,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:15:56,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:15:56,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:15:56,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:15:56,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:15:56,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:15:56,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:15:56,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:15:56,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:15:56,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:15:56,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:15:56,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:15:56,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:15:56,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:15:56,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:15:56,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:15:56,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:15:56,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:15:56,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:15:57,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:15:57,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:15:57,014 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:15:57,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:15:57,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:15:57,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:15:57,016 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:15:57,016 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:15:57,016 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:15:57,016 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:15:57,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:15:57,017 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:15:57,017 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:15:57,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:15:57,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:15:57,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:15:57,019 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:15:57,019 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:15:57,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:15:57,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:15:57,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:15:57,020 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:15:57,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:15:57,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:15:57,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:15:57,021 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:15:57,021 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:15:57,022 INFO L138 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:57,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:15:57,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:15:57,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:15:57,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:15:57,137 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:15:57,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2019-12-07 11:15:57,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/data/a4b6dc8e5/7a202e049ca74d7983015da05ae82d6b/FLAGd977ebd85 [2019-12-07 11:15:57,591 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:15:57,591 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/sv-benchmarks/c/termination-numeric/TwoWay.c [2019-12-07 11:15:57,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/data/a4b6dc8e5/7a202e049ca74d7983015da05ae82d6b/FLAGd977ebd85 [2019-12-07 11:15:57,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/data/a4b6dc8e5/7a202e049ca74d7983015da05ae82d6b [2019-12-07 11:15:57,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:15:57,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:15:57,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:15:57,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:15:57,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:15:57,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78af6170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57, skipping insertion in model container [2019-12-07 11:15:57,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:15:57,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:15:57,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:15:57,745 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:15:57,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:15:57,798 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:15:57,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57 WrapperNode [2019-12-07 11:15:57,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:15:57,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:15:57,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:15:57,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:15:57,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:15:57,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:15:57,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:15:57,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:15:57,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... [2019-12-07 11:15:57,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:15:57,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:15:57,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:15:57,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:15:57,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2019-12-07 11:15:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2019-12-07 11:15:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:15:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:15:57,979 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:15:57,979 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:15:57,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:15:57 BoogieIcfgContainer [2019-12-07 11:15:57,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:15:57,981 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:15:57,981 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:15:57,984 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:15:57,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:15:57,985 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:15:57" (1/3) ... [2019-12-07 11:15:57,986 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bec9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:15:57, skipping insertion in model container [2019-12-07 11:15:57,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:15:57,986 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:15:57" (2/3) ... [2019-12-07 11:15:57,986 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bec9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:15:57, skipping insertion in model container [2019-12-07 11:15:57,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:15:57,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:15:57" (3/3) ... [2019-12-07 11:15:57,988 INFO L371 chiAutomizerObserver]: Analyzing ICFG TwoWay.c [2019-12-07 11:15:58,019 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:15:58,019 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:15:58,019 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:15:58,019 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:15:58,019 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:15:58,019 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:15:58,019 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:15:58,019 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:15:58,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-12-07 11:15:58,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:15:58,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:15:58,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:15:58,049 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 11:15:58,049 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 11:15:58,050 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:15:58,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-12-07 11:15:58,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:15:58,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:15:58,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:15:58,051 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 11:15:58,051 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 11:15:58,056 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 9#L42true assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 15#L45true assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L48true call main_#t~ret6 := twoWay(1, main_~x~0);< 11#twoWayENTRYtrue [2019-12-07 11:15:58,057 INFO L796 eck$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 [2019-12-07 11:15:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1390414, now seen corresponding path program 1 times [2019-12-07 11:15:58,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:15:58,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240309385] [2019-12-07 11:15:58,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:15:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,138 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:15:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash 927613, now seen corresponding path program 1 times [2019-12-07 11:15:58,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:15:58,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592453147] [2019-12-07 11:15:58,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:15:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,151 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:15:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash -118689718, now seen corresponding path program 1 times [2019-12-07 11:15:58,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:15:58,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142758860] [2019-12-07 11:15:58,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:15:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,168 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:15:58,240 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:15:58,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:15:58,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:15:58,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:15:58,241 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:15:58,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:58,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:15:58,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:15:58,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration1_Loop [2019-12-07 11:15:58,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:15:58,242 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:15:58,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,336 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:15:58,336 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,348 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,355 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,362 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,362 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,369 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,373 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:15:58,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,420 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:15:58,422 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:15:58,422 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:15:58,422 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:15:58,422 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:15:58,422 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:15:58,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:58,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:15:58,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:15:58,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration1_Loop [2019-12-07 11:15:58,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:15:58,422 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:15:58,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,483 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:15:58,487 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,491 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 [2019-12-07 11:15:58,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:15:58,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:15:58,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:15:58,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:15:58,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:15:58,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:15:58,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:15:58,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,503 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 [2019-12-07 11:15:58,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:15:58,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:15:58,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:15:58,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:15:58,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:15:58,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:15:58,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:15:58,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,510 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 [2019-12-07 11:15:58,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:15:58,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:15:58,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:15:58,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:15:58,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:15:58,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:15:58,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:15:58,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:15:58,518 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:15:58,518 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,521 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:15:58,521 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:15:58,521 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:15:58,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_#in~n) = 2*twoWay_#in~n + 1 Supporting invariants [] [2019-12-07 11:15:58,525 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:15:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:15:58,559 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:15:58,560 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:15:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:15:58,573 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:15:58,574 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:15:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:15:58,622 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 [2019-12-07 11:15:58,622 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2019-12-07 11:15:58,751 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. [2019-12-07 11:15:58,752 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 [2019-12-07 11:15:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 11:15:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-12-07 11:15:58,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 11:15:58,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:15:58,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 11:15:58,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:15:58,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2019-12-07 11:15:58,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:15:58,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2019-12-07 11:15:58,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:15:58,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 22 states and 25 transitions. [2019-12-07 11:15:58,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 11:15:58,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 11:15:58,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2019-12-07 11:15:58,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:15:58,768 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 11:15:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2019-12-07 11:15:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2019-12-07 11:15:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 11:15:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-12-07 11:15:58,789 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 11:15:58,789 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 11:15:58,789 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:15:58,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-12-07 11:15:58,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:15:58,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:15:58,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:15:58,790 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:15:58,791 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 11:15:58,791 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~ret6, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L42 assume !(main_~x~0 < 0);main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 126#L45 assume !(main_~y~0 < 0);main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 128#L48 call main_#t~ret6 := twoWay(1, main_~x~0);< 129#twoWayENTRY ~terminate := #in~terminate;~n := #in~n; 136#L27 assume !(~n < 0);~m~0 := ~n; 137#L31 assume !(0 != ~terminate);#t~post1 := ~m~0;~m~0 := 1 + #t~post1;havoc #t~post1; 131#L31-2 [2019-12-07 11:15:58,791 INFO L796 eck$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 [2019-12-07 11:15:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1527849353, now seen corresponding path program 1 times [2019-12-07 11:15:58,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:15:58,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578279813] [2019-12-07 11:15:58,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:15:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:15:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:15:58,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578279813] [2019-12-07 11:15:58,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:15:58,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:15:58,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344181659] [2019-12-07 11:15:58,828 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:15:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:15:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1847173, now seen corresponding path program 2 times [2019-12-07 11:15:58,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:15:58,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638622072] [2019-12-07 11:15:58,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:15:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:15:58,837 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:15:58,895 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:15:58,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:15:58,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:15:58,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:15:58,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:15:58,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:58,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:15:58,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:15:58,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration2_Loop [2019-12-07 11:15:58,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:15:58,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:15:58,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:15:58,973 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:15:58,973 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,979 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,985 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/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 [2019-12-07 11:15:58,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,992 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:58,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:58,995 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:58,998 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:58,998 INFO L440 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/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:59,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:59,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:15:59,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:15:59,010 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#in~terminate=4, twoWay_~terminate=4} Honda state: {twoWay_#in~terminate=4, twoWay_~terminate=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:59,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:15:59,014 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:15:59,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:15:59,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:16:11,041 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 11:16:11,043 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:16:11,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:16:11,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:16:11,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:16:11,044 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:16:11,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:16:11,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:16:11,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration2_Loop [2019-12-07 11:16:11,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:16:11,044 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:16:11,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:16:11,116 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:16:11,116 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,119 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 [2019-12-07 11:16:11,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:16:11,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:16:11,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,132 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 [2019-12-07 11:16:11,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:16:11,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:16:11,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,139 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 [2019-12-07 11:16:11,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,141 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 11:16:11,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,143 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 11:16:11,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,145 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/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 [2019-12-07 11:16:11,149 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 [2019-12-07 11:16:11,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:16:11,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:16:11,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,152 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/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 [2019-12-07 11:16:11,156 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 [2019-12-07 11:16:11,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:16:11,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:16:11,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,165 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 [2019-12-07 11:16:11,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:16:11,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:16:11,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:16:11,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:16:11,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:16:11,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:16:11,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:16:11,169 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:16:11,171 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:16:11,172 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db024503-972b-4ed1-a381-a775a67962b9/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:16:11,174 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:16:11,174 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:16:11,174 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:16:11,175 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_~m~0) = 2*twoWay_~m~0 + 1 Supporting invariants [] [2019-12-07 11:16:11,177 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:16:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:16:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:11,196 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:16:11,197 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:16:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:11,206 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 11:16:11,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:16:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:16:36,032 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 [2019-12-07 11:16:36,032 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-12-07 11:17:24,327 WARN L192 SmtUtils]: Spent 48.17 s on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2019-12-07 11:17:24,379 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. [2019-12-07 11:17:24,380 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 [2019-12-07 11:17:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 11:17:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-12-07 11:17:24,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2019-12-07 11:17:24,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:17:24,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 11:17:24,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:17:24,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2019-12-07 11:17:24,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:17:24,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-12-07 11:17:24,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 11:17:24,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2019-12-07 11:17:24,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-12-07 11:17:24,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 11:17:24,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2019-12-07 11:17:24,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:17:24,384 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-12-07 11:17:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2019-12-07 11:17:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-12-07 11:17:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 11:17:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-12-07 11:17:24,386 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-12-07 11:17:24,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:17:24,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:17:24,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:17:24,389 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2019-12-07 11:17:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:17:24,401 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-12-07 11:17:24,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:17:24,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2019-12-07 11:17:24,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:17:24,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:17:24,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:17:24,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:17:24,402 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:17:24,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:17:24,402 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:17:24,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 11:17:24,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:17:24 BoogieIcfgContainer [2019-12-07 11:17:24,407 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:17:24,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:17:24,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:17:24,407 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:17:24,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:15:57" (3/4) ... [2019-12-07 11:17:24,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:17:24,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:17:24,411 INFO L168 Benchmark]: Toolchain (without parser) took 86802.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -91.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:24,411 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:24,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:24,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:24,412 INFO L168 Benchmark]: Boogie Preprocessor took 12.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:24,412 INFO L168 Benchmark]: RCFGBuilder took 149.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:24,413 INFO L168 Benchmark]: BuchiAutomizer took 86425.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:24,413 INFO L168 Benchmark]: Witness Printer took 2.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:24,416 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 189.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 149.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 86425.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. 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 86.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 12.8s. Construction of modules took 0.0s. Büchi inclusion checks took 73.3s. 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: 8ms 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...