./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 554582d6fc3de8e87f5dd30e5019302b6e1b96be .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:02:26,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:02:26,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:02:26,949 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:02:26,949 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:02:26,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:02:26,951 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:02:26,952 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:02:26,953 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:02:26,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:02:26,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:02:26,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:02:26,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:02:26,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:02:26,956 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:02:26,957 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:02:26,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:02:26,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:02:26,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:02:26,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:02:26,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:02:26,963 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:02:26,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:02:26,965 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:02:26,965 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:02:26,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:02:26,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:02:26,967 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:02:26,968 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:02:26,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:02:26,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:02:26,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:02:26,969 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:02:26,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:02:26,970 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:02:26,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:02:26,971 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 13:02:26,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:02:26,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:02:26,983 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:02:26,983 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:02:26,984 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 13:02:26,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:02:26,984 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:02:26,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 13:02:26,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:02:26,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:02:26,986 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 13:02:26,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:02:26,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:02:26,986 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 13:02:26,987 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 13:02:26,987 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_a06e2de6-803e-4275-ba33-36ca944266a7/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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2018-11-28 13:02:27,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:02:27,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:02:27,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:02:27,019 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:02:27,019 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:02:27,020 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-28 13:02:27,059 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/data/f411f6d8e/25c7fc8cd2e94f3cb809a8b5aa5f6a02/FLAG2041cb1cb [2018-11-28 13:02:27,392 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:02:27,393 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-28 13:02:27,397 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/data/f411f6d8e/25c7fc8cd2e94f3cb809a8b5aa5f6a02/FLAG2041cb1cb [2018-11-28 13:02:27,820 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/data/f411f6d8e/25c7fc8cd2e94f3cb809a8b5aa5f6a02 [2018-11-28 13:02:27,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:02:27,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:02:27,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:02:27,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:02:27,828 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:02:27,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f31bbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27, skipping insertion in model container [2018-11-28 13:02:27,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:02:27,845 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:02:27,941 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:02:27,943 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:02:27,953 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:02:27,961 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:02:27,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27 WrapperNode [2018-11-28 13:02:27,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:02:27,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:02:27,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:02:27,962 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:02:27,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:02:27,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:02:27,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:02:27,982 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:02:27,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... [2018-11-28 13:02:27,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:02:27,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:02:27,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:02:27,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:02:27,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure p [2018-11-28 13:02:28,061 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2018-11-28 13:02:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:02:28,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:02:28,156 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:02:28,156 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 13:02:28,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:28 BoogieIcfgContainer [2018-11-28 13:02:28,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:02:28,157 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 13:02:28,157 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 13:02:28,160 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 13:02:28,161 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:02:28,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 01:02:27" (1/3) ... [2018-11-28 13:02:28,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@449dd5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:02:28, skipping insertion in model container [2018-11-28 13:02:28,162 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:02:28,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:27" (2/3) ... [2018-11-28 13:02:28,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@449dd5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:02:28, skipping insertion in model container [2018-11-28 13:02:28,162 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:02:28,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:28" (3/3) ... [2018-11-28 13:02:28,164 INFO L375 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-11-28 13:02:28,202 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:02:28,202 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 13:02:28,202 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 13:02:28,202 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 13:02:28,202 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:02:28,203 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:02:28,203 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 13:02:28,203 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:02:28,203 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 13:02:28,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-11-28 13:02:28,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:28,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:28,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:28,240 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:02:28,240 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:02:28,240 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 13:02:28,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-11-28 13:02:28,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:28,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:28,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:28,243 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:02:28,243 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:02:28,251 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2018-11-28 13:02:28,251 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2018-11-28 13:02:28,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2018-11-28 13:02:28,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:28,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:28,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2018-11-28 13:02:28,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:28,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:28,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:28,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2018-11-28 13:02:28,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:28,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:28,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:28,467 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:28,468 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:28,468 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:28,468 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:28,469 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:02:28,469 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:28,469 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:28,469 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:28,469 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 13:02:28,469 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:28,469 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:28,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,585 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:28,585 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,625 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,625 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,641 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,641 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,644 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,644 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,662 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,662 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,665 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,665 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,685 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,685 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,711 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,711 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,714 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,714 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,730 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,730 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,734 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:28,735 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,752 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:28,752 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:28,771 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:02:28,771 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:28,838 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:02:28,839 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:28,839 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:28,839 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:28,839 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:28,839 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:02:28,840 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:28,840 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:28,840 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:28,840 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 13:02:28,840 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:28,840 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:28,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:28,937 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:28,941 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:02:28,943 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 [2018-11-28 13:02:28,944 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,945 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,945 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,945 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,945 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,947 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,947 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,951 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 [2018-11-28 13:02:28,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,952 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,953 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,953 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,953 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,954 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,955 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 [2018-11-28 13:02:28,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,956 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,956 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,956 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,956 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,957 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,958 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 [2018-11-28 13:02:28,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,958 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,959 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,959 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,960 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,961 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 [2018-11-28 13:02:28,961 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,961 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,961 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,961 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,962 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,962 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,962 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,964 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,964 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 [2018-11-28 13:02:28,964 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,964 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,964 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,965 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,965 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,965 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,965 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,967 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,967 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 [2018-11-28 13:02:28,968 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,968 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,968 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,968 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,968 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,969 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,969 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,975 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,976 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 [2018-11-28 13:02:28,976 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,976 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,976 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,977 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,977 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:28,977 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:28,977 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,978 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,978 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 13:02:28,978 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 [2018-11-28 13:02:28,978 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,978 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,979 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,979 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,979 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,979 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,979 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,980 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,980 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 [2018-11-28 13:02:28,981 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,981 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,981 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,981 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,981 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,981 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,981 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,982 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,982 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 [2018-11-28 13:02:28,983 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,983 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,983 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,983 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,983 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,984 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,984 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,985 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,985 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 [2018-11-28 13:02:28,985 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,986 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,986 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,986 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,986 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,987 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,987 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,989 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,989 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 [2018-11-28 13:02:28,990 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,990 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,990 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,990 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,990 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,991 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,991 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,992 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,992 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 [2018-11-28 13:02:28,993 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,993 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,993 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,994 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,994 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:28,995 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:28,995 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 [2018-11-28 13:02:28,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:28,996 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:28,996 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:28,996 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:28,996 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:28,997 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:28,997 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:29,004 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:02:29,012 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 13:02:29,013 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 13:02:29,014 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:02:29,015 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:02:29,015 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:02:29,015 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2018-11-28 13:02:29,016 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:02:29,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:29,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:29,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:29,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:02:29,155 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2018-11-28 13:02:29,389 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2018-11-28 13:02:29,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:02:29,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:02:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 13:02:29,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 13:02:29,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:29,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:02:29,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:29,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 13:02:29,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:29,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-11-28 13:02:29,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:29,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2018-11-28 13:02:29,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 13:02:29,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 13:02:29,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2018-11-28 13:02:29,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:02:29,414 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-11-28 13:02:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2018-11-28 13:02:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2018-11-28 13:02:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 13:02:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-28 13:02:29,445 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-28 13:02:29,445 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-28 13:02:29,445 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 13:02:29,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-11-28 13:02:29,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:29,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:29,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:29,447 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-28 13:02:29,447 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:02:29,447 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2018-11-28 13:02:29,447 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2018-11-28 13:02:29,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:29,448 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2018-11-28 13:02:29,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:29,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:29,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:29,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:29,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2018-11-28 13:02:29,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:29,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:29,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:29,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2018-11-28 13:02:29,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:29,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:29,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:29,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:29,592 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:29,592 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:29,592 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:29,592 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:29,592 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:02:29,592 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:29,593 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:29,593 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:29,593 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:02:29,593 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:29,593 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:29,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:29,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:29,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:29,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:29,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:29,671 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:29,672 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:29,676 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:29,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:29,679 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:29,680 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:29,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:29,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:29,701 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:29,701 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:29,721 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:29,721 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:29,724 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:29,724 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:29,744 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:29,744 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/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 [2018-11-28 13:02:29,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:02:29,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:30,132 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:02:30,135 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:30,135 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:30,135 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:30,135 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:30,136 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:02:30,136 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:30,136 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:30,136 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:30,136 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:02:30,136 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:30,136 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:30,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,229 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:30,229 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:02:30,229 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 [2018-11-28 13:02:30,230 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:30,230 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:30,230 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:30,230 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:30,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:30,231 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:30,231 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:30,232 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:30,232 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 [2018-11-28 13:02:30,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:30,233 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:30,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:30,233 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:30,233 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:30,234 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:30,234 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:30,234 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:30,235 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 [2018-11-28 13:02:30,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:30,235 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:30,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:30,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:30,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:30,236 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:30,236 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:30,243 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:02:30,246 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:02:30,246 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:02:30,246 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:02:30,247 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:02:30,247 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:02:30,247 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2018-11-28 13:02:30,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:02:30,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:30,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:30,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:30,308 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 [2018-11-28 13:02:30,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-11-28 13:02:30,322 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2018-11-28 13:02:30,322 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 [2018-11-28 13:02:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 13:02:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-11-28 13:02:30,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 13:02:30,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:30,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-28 13:02:30,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:30,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-28 13:02:30,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:30,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-11-28 13:02:30,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:30,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2018-11-28 13:02:30,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 13:02:30,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 13:02:30,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2018-11-28 13:02:30,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:02:30,328 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-11-28 13:02:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2018-11-28 13:02:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-28 13:02:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 13:02:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-11-28 13:02:30,330 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-28 13:02:30,330 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-28 13:02:30,330 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 13:02:30,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2018-11-28 13:02:30,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:30,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:30,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:30,331 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:30,331 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:02:30,332 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2018-11-28 13:02:30,332 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2018-11-28 13:02:30,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:30,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2018-11-28 13:02:30,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:30,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:30,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:30,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2018-11-28 13:02:30,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:30,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:30,349 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2018-11-28 13:02:30,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:30,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:30,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:30,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:30,420 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:30,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:30,420 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:30,420 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:30,420 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:02:30,421 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:30,421 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:30,421 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:30,421 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:02:30,421 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:30,421 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:30,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:30,463 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:30,463 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:30,465 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:30,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:30,468 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:30,469 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=1, p_~m=1} Honda state: {p_#in~m=1, p_~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:30,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:30,483 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:30,504 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:02:30,504 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:42,527 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 13:02:42,529 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:42,530 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:42,530 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:42,530 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:42,530 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:02:42,530 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:42,530 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:42,530 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:42,530 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:02:42,530 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:42,530 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:42,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,594 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:42,594 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:02:42,594 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 [2018-11-28 13:02:42,595 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,595 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,595 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,595 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,595 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:42,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:42,596 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,597 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,597 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 [2018-11-28 13:02:42,598 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,598 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,598 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,603 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,603 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:42,604 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:42,604 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,608 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,608 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 [2018-11-28 13:02:42,609 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,609 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,609 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:42,610 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:42,610 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,610 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,611 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 [2018-11-28 13:02:42,611 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,611 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,611 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,611 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,611 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:42,612 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:42,612 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,613 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,613 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 [2018-11-28 13:02:42,613 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,613 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,614 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,614 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,614 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:42,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:42,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,623 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 13:02:42,623 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 [2018-11-28 13:02:42,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,623 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,624 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,624 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:42,624 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:42,624 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,625 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:42,626 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 [2018-11-28 13:02:42,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:42,626 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:42,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:42,626 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:42,627 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:42,627 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:42,627 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:42,634 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:02:42,644 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 13:02:42,644 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 13:02:42,644 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:02:42,644 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:02:42,645 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:02:42,645 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] [2018-11-28 13:02:42,645 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:02:42,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:42,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:42,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:42,744 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:02:42,744 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-28 13:02:42,806 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2018-11-28 13:02:42,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:02:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:02:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 13:02:42,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:02:42,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:42,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:02:42,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:42,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 13:02:42,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:42,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2018-11-28 13:02:42,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:42,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2018-11-28 13:02:42,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-28 13:02:42,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-28 13:02:42,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2018-11-28 13:02:42,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:02:42,812 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-11-28 13:02:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2018-11-28 13:02:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-11-28 13:02:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 13:02:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-11-28 13:02:42,814 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-11-28 13:02:42,814 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-11-28 13:02:42,814 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 13:02:42,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2018-11-28 13:02:42,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 13:02:42,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:42,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:42,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:42,816 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:02:42,816 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2018-11-28 13:02:42,816 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2018-11-28 13:02:42,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2018-11-28 13:02:42,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:42,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:42,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:42,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2018-11-28 13:02:42,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:42,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:42,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:42,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2018-11-28 13:02:42,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:42,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:42,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:42,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:42,903 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:42,903 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:42,903 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:42,903 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:42,903 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:02:42,903 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:42,903 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:42,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:42,903 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 13:02:42,903 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:42,903 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:42,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:42,947 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:42,947 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:42,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:42,959 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:42,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:02:42,978 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:55,000 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 13:02:55,003 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:55,003 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:55,003 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:55,003 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:55,003 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:02:55,003 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:55,003 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:55,003 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:55,003 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 13:02:55,003 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:55,003 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:55,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,048 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:55,048 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:02:55,049 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 [2018-11-28 13:02:55,049 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,049 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,049 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,050 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,050 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:55,050 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:55,050 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,053 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:55,053 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 [2018-11-28 13:02:55,054 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,054 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,054 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:55,054 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:55,054 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,055 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:55,055 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 [2018-11-28 13:02:55,055 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,055 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,055 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,055 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,056 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:55,056 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:55,056 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,056 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:55,057 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 [2018-11-28 13:02:55,057 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,057 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,057 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,057 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,057 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:55,058 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:55,058 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,059 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:55,059 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 [2018-11-28 13:02:55,059 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,059 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,059 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,060 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,060 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:02:55,060 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:02:55,060 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,061 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:02:55,061 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-11-28 13:02:55,061 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 [2018-11-28 13:02:55,061 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:02:55,061 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:02:55,061 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:02:55,062 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:02:55,062 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-11-28 13:02:55,062 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-11-28 13:02:55,062 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:02:55,067 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:02:55,074 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-28 13:02:55,074 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 13:02:55,075 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:02:55,075 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:02:55,075 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:02:55,075 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2018-11-28 13:02:55,075 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:02:55,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:55,150 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:02:55,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 13:02:55,219 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-11-28 13:02:55,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:02:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:02:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 13:02:55,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:02:55,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:55,220 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:02:55,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:55,286 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:02:55,286 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 13:02:55,355 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2018-11-28 13:02:55,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:02:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:02:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-28 13:02:55,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:02:55,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:55,358 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:02:55,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:02:55,425 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:02:55,425 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-28 13:02:55,481 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2018-11-28 13:02:55,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:02:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:02:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 13:02:55,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:02:55,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:55,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 13:02:55,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:55,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 13:02:55,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:02:55,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-11-28 13:02:55,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-11-28 13:02:55,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2018-11-28 13:02:55,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 13:02:55,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-28 13:02:55,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-11-28 13:02:55,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:02:55,486 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-28 13:02:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-11-28 13:02:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-11-28 13:02:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:02:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-11-28 13:02:55,489 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-28 13:02:55,489 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-28 13:02:55,489 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 13:02:55,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2018-11-28 13:02:55,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-28 13:02:55,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:02:55,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:02:55,490 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:55,490 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-28 13:02:55,490 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2018-11-28 13:02:55,490 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2018-11-28 13:02:55,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2018-11-28 13:02:55,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:55,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:55,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:55,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:55,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2018-11-28 13:02:55,501 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:55,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:55,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,501 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:55,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:02:55,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2018-11-28 13:02:55,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:55,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:55,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:55,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:02:55,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:55,554 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:55,561 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:02:55,569 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:02:55,569 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:02:55,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:02:55,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:55,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:02:55,737 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:02:55,737 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:02:55,738 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:02:55,738 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:02:55,738 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:02:55,738 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:02:55,738 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:02:55,738 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:02:55,738 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 13:02:55,738 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:02:55,738 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:02:55,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:02:55,782 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:02:55,782 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:55,784 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:55,784 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:55,786 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:55,786 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:55,801 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:55,801 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:55,802 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:55,802 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:55,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:55,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:02:55,820 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:02:55,820 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:55,836 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:02:55,836 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/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 [2018-11-28 13:02:55,875 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:02:55,875 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:02,606 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:03:02,609 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:03:02,609 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:03:02,609 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:03:02,609 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:03:02,609 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:03:02,609 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:02,609 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:03:02,609 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:03:02,610 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 13:03:02,610 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:03:02,610 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:03:02,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,673 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:03:02,673 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:03:02,673 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 [2018-11-28 13:03:02,673 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:02,673 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:02,674 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:02,674 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:02,674 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:02,674 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:02,674 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:02,674 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:02,675 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 [2018-11-28 13:03:02,675 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:02,675 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:02,675 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:02,675 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:02,675 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:02,676 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:02,676 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:02,676 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:02,676 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 [2018-11-28 13:03:02,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:02,677 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:02,677 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:02,677 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:02,677 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:02,677 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:02,677 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:02,677 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:02,678 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 [2018-11-28 13:03:02,678 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:02,678 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:02,680 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:02,680 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:02,680 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:02,681 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:02,681 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:02,685 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:03:02,689 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:03:02,689 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:03:02,690 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:03:02,690 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:03:02,690 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:03:02,690 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2018-11-28 13:03:02,690 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:03:02,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:02,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:02,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:03:02,768 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-28 13:03:02,768 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2018-11-28 13:03:02,848 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2018-11-28 13:03:02,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 13:03:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 13:03:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2018-11-28 13:03:02,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2018-11-28 13:03:02,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:02,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2018-11-28 13:03:02,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:02,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2018-11-28 13:03:02,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:02,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2018-11-28 13:03:02,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 13:03:02,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2018-11-28 13:03:02,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2018-11-28 13:03:02,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-28 13:03:02,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2018-11-28 13:03:02,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:03:02,854 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2018-11-28 13:03:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2018-11-28 13:03:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2018-11-28 13:03:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 13:03:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2018-11-28 13:03:02,859 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2018-11-28 13:03:02,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:03:02,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:03:02,862 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2018-11-28 13:03:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:03:02,900 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2018-11-28 13:03:02,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:03:02,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2018-11-28 13:03:02,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-28 13:03:02,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2018-11-28 13:03:02,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-11-28 13:03:02,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-11-28 13:03:02,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2018-11-28 13:03:02,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:03:02,904 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2018-11-28 13:03:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2018-11-28 13:03:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-11-28 13:03:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:03:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-28 13:03:02,906 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 13:03:02,906 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 13:03:02,906 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 13:03:02,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2018-11-28 13:03:02,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 13:03:02,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:03:02,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:03:02,911 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:03:02,911 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:03:02,911 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2018-11-28 13:03:02,911 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2018-11-28 13:03:02,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2018-11-28 13:03:02,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:02,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:02,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:03:02,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:02,924 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2018-11-28 13:03:02,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:02,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:02,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:03:02,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2018-11-28 13:03:02,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:02,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:02,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:03:02,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:02,990 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:03:02,990 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:03:02,991 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:03:02,991 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:03:02,991 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:03:02,991 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:02,991 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:03:02,991 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:03:02,991 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 13:03:02,991 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:03:02,991 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:03:02,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:02,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,028 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:03:03,028 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,035 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,035 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,037 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,037 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,063 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,063 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,066 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,066 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,082 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,082 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,099 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:03:03,099 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,115 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:03:03,116 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:03:03,116 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:03:03,116 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:03:03,116 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:03:03,116 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:03:03,117 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,117 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:03:03,117 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:03:03,117 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 13:03:03,117 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:03:03,117 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:03:03,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,179 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:03:03,180 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:03:03,180 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 [2018-11-28 13:03:03,180 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,180 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,181 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,181 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,181 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,181 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,181 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,182 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,182 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 [2018-11-28 13:03:03,182 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,182 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,182 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,183 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,183 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,183 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,183 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,183 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,184 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 [2018-11-28 13:03:03,184 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,184 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,184 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,184 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,184 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,185 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,185 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,185 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,185 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 [2018-11-28 13:03:03,186 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,186 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,186 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,186 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,186 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,186 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,186 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,187 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:03:03,188 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:03:03,188 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:03:03,189 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:03:03,189 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:03:03,189 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:03:03,189 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-11-28 13:03:03,189 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:03:03,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:03:03,243 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:03:03,244 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-28 13:03:03,266 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2018-11-28 13:03:03,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:03:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:03:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 13:03:03,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-28 13:03:03,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-28 13:03:03,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-28 13:03:03,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2018-11-28 13:03:03,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 13:03:03,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2018-11-28 13:03:03,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-28 13:03:03,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 13:03:03,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2018-11-28 13:03:03,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:03:03,273 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-11-28 13:03:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2018-11-28 13:03:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-11-28 13:03:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:03:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-28 13:03:03,275 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 13:03:03,275 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 13:03:03,275 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 13:03:03,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-11-28 13:03:03,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 13:03:03,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:03:03,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:03:03,277 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 13:03:03,277 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 13:03:03,277 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2018-11-28 13:03:03,277 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2018-11-28 13:03:03,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2018-11-28 13:03:03,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:03,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:03,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:03:03,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,287 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2018-11-28 13:03:03,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:03,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:03,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:03:03,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2018-11-28 13:03:03,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:03:03,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:03:03,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:03:03,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:03:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:03:03,341 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:03:03,341 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:03:03,341 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:03:03,341 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:03:03,341 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:03:03,341 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,341 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:03:03,341 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:03:03,341 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 13:03:03,341 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:03:03,341 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:03:03,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,386 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:03:03,386 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,395 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,395 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,397 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,397 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,421 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,421 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,430 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,430 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,446 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,446 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,448 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,448 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,468 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:03:03,468 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:03:03,483 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a06e2de6-803e-4275-ba33-36ca944266a7/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,501 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:03:03,501 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:03:03,517 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:03:03,518 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:03:03,518 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:03:03,518 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:03:03,518 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:03:03,518 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:03:03,518 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:03:03,518 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:03:03,518 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:03:03,518 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 13:03:03,518 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:03:03,519 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:03:03,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:03:03,560 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:03:03,560 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:03:03,561 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 [2018-11-28 13:03:03,561 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,561 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,561 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,561 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,561 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,562 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,562 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,562 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,562 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 [2018-11-28 13:03:03,562 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,562 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,563 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,563 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,563 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,563 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,563 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,563 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,563 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 [2018-11-28 13:03:03,564 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,564 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,564 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,564 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,564 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,564 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,564 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,564 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:03:03,565 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 [2018-11-28 13:03:03,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:03:03,565 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:03:03,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:03:03,565 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:03:03,565 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:03:03,565 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:03:03,565 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:03:03,566 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:03:03,567 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:03:03,567 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:03:03,567 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:03:03,567 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:03:03,567 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:03:03,567 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-11-28 13:03:03,567 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:03:03,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:03:03,615 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:03:03,616 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 13:03:03,637 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-11-28 13:03:03,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:03:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:03:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 13:03:03,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-28 13:03:03,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,638 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:03:03,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:03:03,681 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:03:03,681 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 13:03:03,708 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2018-11-28 13:03:03,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:03:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:03:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 13:03:03,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-28 13:03:03,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,709 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 13:03:03,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:03:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:03:03,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:03:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:03:03,743 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 13:03:03,743 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 13:03:03,761 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2018-11-28 13:03:03,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:03:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:03:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 13:03:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-28 13:03:03,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2018-11-28 13:03:03,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2018-11-28 13:03:03,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:03:03,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2018-11-28 13:03:03,765 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:03:03,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2018-11-28 13:03:03,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 13:03:03,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 13:03:03,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 13:03:03,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:03:03,765 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:03:03,765 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:03:03,765 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:03:03,765 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 13:03:03,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:03:03,766 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:03:03,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 13:03:03,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 01:03:03 BoogieIcfgContainer [2018-11-28 13:03:03,771 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 13:03:03,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:03:03,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:03:03,772 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:03:03,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:28" (3/4) ... [2018-11-28 13:03:03,776 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:03:03,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:03:03,776 INFO L168 Benchmark]: Toolchain (without parser) took 35953.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:03:03,777 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:03:03,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.13 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:03:03,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:03:03,779 INFO L168 Benchmark]: Boogie Preprocessor took 10.25 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:03:03,779 INFO L168 Benchmark]: RCFGBuilder took 164.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:03:03,779 INFO L168 Benchmark]: BuchiAutomizer took 35614.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:03:03,780 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:03:03,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.13 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.25 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 164.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 35614.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 43.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 35.5s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 33.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf99 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf89 smp100 dnf100 smp100 tf107 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 31.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...