./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:29:01,000 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:29:01,001 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:29:01,010 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:29:01,010 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:29:01,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:29:01,012 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:29:01,013 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:29:01,014 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:29:01,015 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:29:01,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:29:01,016 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:29:01,017 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:29:01,017 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:29:01,018 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:29:01,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:29:01,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:29:01,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:29:01,022 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:29:01,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:29:01,024 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:29:01,025 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:29:01,027 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:29:01,027 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:29:01,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:29:01,028 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:29:01,029 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:29:01,029 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:29:01,030 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:29:01,031 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:29:01,031 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:29:01,032 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:29:01,032 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:29:01,032 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:29:01,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:29:01,033 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:29:01,034 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 04:29:01,045 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:29:01,045 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:29:01,046 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:29:01,046 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:29:01,046 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:29:01,046 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 04:29:01,047 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 04:29:01,047 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 04:29:01,047 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 04:29:01,048 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 04:29:01,048 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 04:29:01,048 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:29:01,048 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 04:29:01,048 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:29:01,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 04:29:01,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 04:29:01,050 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:29:01,050 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:29:01,050 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 04:29:01,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:29:01,050 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:29:01,050 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 04:29:01,051 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 04:29:01,051 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_5023641d-70f1-440b-a3ee-50f83b79998e/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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2018-11-10 04:29:01,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:29:01,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:29:01,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:29:01,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:29:01,086 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:29:01,086 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-10 04:29:01,127 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/data/f9e0a1fcd/3062223c82454aaa8ac308377cc67f6a/FLAG48b6909a4 [2018-11-10 04:29:01,510 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:29:01,511 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-10 04:29:01,515 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/data/f9e0a1fcd/3062223c82454aaa8ac308377cc67f6a/FLAG48b6909a4 [2018-11-10 04:29:01,524 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/data/f9e0a1fcd/3062223c82454aaa8ac308377cc67f6a [2018-11-10 04:29:01,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:29:01,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:29:01,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:29:01,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:29:01,530 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:29:01,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01, skipping insertion in model container [2018-11-10 04:29:01,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:29:01,548 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:29:01,641 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:29:01,643 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:29:01,652 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:29:01,659 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:29:01,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01 WrapperNode [2018-11-10 04:29:01,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:29:01,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:29:01,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:29:01,661 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:29:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:29:01,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:29:01,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:29:01,679 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:29:01,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... [2018-11-10 04:29:01,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:29:01,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:29:01,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:29:01,690 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:29:01,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:29:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:29:01,870 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:29:01,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:29:01 BoogieIcfgContainer [2018-11-10 04:29:01,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:29:01,871 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 04:29:01,871 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 04:29:01,873 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 04:29:01,873 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:29:01,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 04:29:01" (1/3) ... [2018-11-10 04:29:01,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0dc09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 04:29:01, skipping insertion in model container [2018-11-10 04:29:01,874 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:29:01,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:29:01" (2/3) ... [2018-11-10 04:29:01,875 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0dc09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 04:29:01, skipping insertion in model container [2018-11-10 04:29:01,875 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 04:29:01,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:29:01" (3/3) ... [2018-11-10 04:29:01,876 INFO L375 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-10 04:29:01,912 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:29:01,913 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 04:29:01,913 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 04:29:01,913 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 04:29:01,913 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:29:01,913 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:29:01,913 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 04:29:01,913 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:29:01,914 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 04:29:01,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 04:29:01,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:01,937 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:01,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:01,941 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 04:29:01,941 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:01,941 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 04:29:01,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 04:29:01,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:01,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:01,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:01,943 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 04:29:01,943 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:01,948 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 9#L20-2true [2018-11-10 04:29:01,948 INFO L795 eck$LassoCheckResult]: Loop: 9#L20-2true assume true; 10#L19-1true assume !!(main_~y1~0 != main_~y2~0); 12#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 9#L20-2true [2018-11-10 04:29:01,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-11-10 04:29:01,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:01,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:01,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:01,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:01,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,012 INFO L82 PathProgramCache]: Analyzing trace with hash 38923, now seen corresponding path program 1 times [2018-11-10 04:29:02,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:02,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:02,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:02,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,022 INFO L82 PathProgramCache]: Analyzing trace with hash 889508810, now seen corresponding path program 1 times [2018-11-10 04:29:02,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:02,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:02,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:02,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,104 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:02,104 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:02,104 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:02,104 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:02,105 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:29:02,105 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:02,105 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:02,105 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:02,105 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-10 04:29:02,105 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:02,106 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:02,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,269 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:02,269 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,273 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,273 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,293 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,293 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,310 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,310 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,344 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,344 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,353 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,355 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,355 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,371 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,372 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,374 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,374 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,389 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,389 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,405 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,405 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,408 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,408 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,427 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:29:02,427 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,532 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:29:02,533 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:02,533 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:02,533 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:02,533 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:02,533 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:29:02,533 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:02,534 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:02,534 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:02,534 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-10 04:29:02,534 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:02,534 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:02,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,597 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:02,601 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:29:02,603 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 [2018-11-10 04:29:02,605 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,605 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:02,605 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,606 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,606 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,607 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:02,607 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:02,610 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:02,611 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 [2018-11-10 04:29:02,612 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,612 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:02,613 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,613 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,613 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,613 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:02,613 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:02,614 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:02,614 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 [2018-11-10 04:29:02,615 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,615 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,615 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,615 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,616 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:02,617 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:02,623 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:02,623 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 [2018-11-10 04:29:02,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,624 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:02,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,624 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,624 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,625 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:02,625 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:02,625 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:02,626 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 [2018-11-10 04:29:02,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,626 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,627 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,628 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:02,628 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:02,636 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:02,636 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 [2018-11-10 04:29:02,637 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:02,637 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:02,637 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:02,637 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:02,639 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:02,640 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:02,666 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:29:02,681 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-10 04:29:02,681 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:29:02,683 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:29:02,685 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-10 04:29:02,685 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:29:02,685 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-10 04:29:02,688 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-10 04:29:02,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:02,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:02,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:02,745 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 04:29:02,746 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-11-10 04:29:02,787 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 32 states and 37 transitions. Complement of second has 6 states. [2018-11-10 04:29:02,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 04:29:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-10 04:29:02,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-10 04:29:02,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:02,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 04:29:02,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:02,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-10 04:29:02,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:02,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2018-11-10 04:29:02,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:02,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 12 states and 15 transitions. [2018-11-10 04:29:02,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-10 04:29:02,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-10 04:29:02,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-11-10 04:29:02,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:29:02,796 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 04:29:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-11-10 04:29:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-10 04:29:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-10 04:29:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2018-11-10 04:29:02,812 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 04:29:02,813 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 04:29:02,813 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 04:29:02,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2018-11-10 04:29:02,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:02,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:02,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:02,813 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-10 04:29:02,814 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:02,814 INFO L793 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 103#L20-2 assume true; 100#L19-1 assume !!(main_~y1~0 != main_~y2~0); 104#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 96#L20-2 [2018-11-10 04:29:02,814 INFO L795 eck$LassoCheckResult]: Loop: 96#L20-2 assume true; 97#L19-1 assume !!(main_~y1~0 != main_~y2~0); 101#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 96#L20-2 [2018-11-10 04:29:02,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 889508812, now seen corresponding path program 1 times [2018-11-10 04:29:02,814 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:02,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:02,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash 38923, now seen corresponding path program 2 times [2018-11-10 04:29:02,819 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:02,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:02,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:02,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash -591188896, now seen corresponding path program 1 times [2018-11-10 04:29:02,824 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:02,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:02,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:02,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:02,868 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:02,868 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:02,868 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:02,868 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:02,868 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:29:02,868 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:02,868 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:02,868 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:02,868 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-10 04:29:02,868 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:02,868 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:02,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:02,941 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:02,941 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,948 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,948 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,972 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,972 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:02,976 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:02,976 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:02,978 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:02,978 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,002 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,002 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,004 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:03,004 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,020 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,020 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,022 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:03,022 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,038 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,038 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,054 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:03,054 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,057 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,057 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,085 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:29:03,085 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,256 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:29:03,257 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:03,257 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:03,257 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:03,257 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:03,257 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:29:03,257 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:03,257 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:03,257 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:03,257 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-10 04:29:03,258 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:03,258 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:03,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,310 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:03,310 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:29:03,311 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 [2018-11-10 04:29:03,311 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,313 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:03,313 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:03,318 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,319 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 [2018-11-10 04:29:03,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,321 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:03,321 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,321 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,321 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,321 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:03,321 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:03,323 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,324 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 [2018-11-10 04:29:03,324 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,324 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:03,324 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,325 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,325 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,325 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:03,325 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:03,326 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,326 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 [2018-11-10 04:29:03,326 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,327 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:03,327 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,327 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,330 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,331 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:03,331 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:03,332 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,332 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 [2018-11-10 04:29:03,333 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,333 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,333 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,333 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,335 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:03,336 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:03,347 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:29:03,356 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-10 04:29:03,356 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 04:29:03,356 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:29:03,357 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-10 04:29:03,358 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:29:03,358 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-10 04:29:03,361 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-10 04:29:03,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:03,409 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-10 04:29:03,409 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-10 04:29:03,449 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 18 states and 23 transitions. Complement of second has 6 states. [2018-11-10 04:29:03,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 04:29:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-10 04:29:03,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 04:29:03,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 04:29:03,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-10 04:29:03,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2018-11-10 04:29:03,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:03,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2018-11-10 04:29:03,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 04:29:03,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-10 04:29:03,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2018-11-10 04:29:03,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:29:03,453 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-11-10 04:29:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2018-11-10 04:29:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 04:29:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 04:29:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2018-11-10 04:29:03,455 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-11-10 04:29:03,455 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-11-10 04:29:03,456 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 04:29:03,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2018-11-10 04:29:03,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 04:29:03,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:03,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:03,457 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2018-11-10 04:29:03,457 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:03,457 INFO L793 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 183#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 192#L20-2 assume true; 189#L19-1 assume !!(main_~y1~0 != main_~y2~0); 190#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 193#L20-2 assume true; 196#L19-1 assume !!(main_~y1~0 != main_~y2~0); 195#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 185#L20-2 [2018-11-10 04:29:03,457 INFO L795 eck$LassoCheckResult]: Loop: 185#L20-2 assume true; 186#L19-1 assume !!(main_~y1~0 != main_~y2~0); 194#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 185#L20-2 [2018-11-10 04:29:03,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash -591188894, now seen corresponding path program 2 times [2018-11-10 04:29:03,458 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:03,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:03,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:03,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,465 INFO L82 PathProgramCache]: Analyzing trace with hash 38923, now seen corresponding path program 3 times [2018-11-10 04:29:03,465 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:03,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:03,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1552548874, now seen corresponding path program 2 times [2018-11-10 04:29:03,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:03,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:03,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:03,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:03,540 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:03,540 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:03,540 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:03,540 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:03,540 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:29:03,540 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:03,540 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:03,540 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:03,541 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-10 04:29:03,541 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:03,541 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:03,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,598 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:03,598 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,611 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:03,611 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,628 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,628 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,630 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:03,630 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:03,646 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:03,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:29:03,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:03,772 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:29:03,773 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:03,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:03,773 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:03,773 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:03,774 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:29:03,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:03,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:03,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:03,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-10 04:29:03,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:03,774 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:03,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:03,810 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:03,810 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:29:03,811 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 [2018-11-10 04:29:03,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,811 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:03,812 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,812 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,812 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,812 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:03,812 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:03,813 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,813 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 [2018-11-10 04:29:03,813 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,813 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:03,813 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,813 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,814 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,814 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:03,814 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:03,814 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,815 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 [2018-11-10 04:29:03,815 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,815 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,815 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,815 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,816 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:03,816 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:03,818 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:03,818 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 [2018-11-10 04:29:03,818 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:03,819 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:03,819 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:03,819 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:03,820 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:03,820 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:03,828 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:29:03,837 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-10 04:29:03,838 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-10 04:29:03,838 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:29:03,839 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-10 04:29:03,840 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:29:03,840 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0) = 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-10 04:29:03,844 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-10 04:29:03,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:03,875 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-10 04:29:03,875 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 04:29:03,898 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 22 states and 29 transitions. Complement of second has 6 states. [2018-11-10 04:29:03,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 04:29:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-10 04:29:03,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 04:29:03,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,899 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:29:03,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:03,924 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-10 04:29:03,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 04:29:03,942 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 22 states and 29 transitions. Complement of second has 6 states. [2018-11-10 04:29:03,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 04:29:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-10 04:29:03,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 04:29:03,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,943 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 04:29:03,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:03,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:03,968 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-10 04:29:03,968 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 04:29:03,991 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 33 transitions. Complement of second has 7 states. [2018-11-10 04:29:03,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 04:29:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 04:29:03,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 04:29:03,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-10 04:29:03,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-10 04:29:03,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:03,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2018-11-10 04:29:03,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 04:29:03,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 27 transitions. [2018-11-10 04:29:03,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-10 04:29:03,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-10 04:29:03,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2018-11-10 04:29:03,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:29:03,996 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-11-10 04:29:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2018-11-10 04:29:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 9. [2018-11-10 04:29:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-10 04:29:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-11-10 04:29:03,997 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-10 04:29:03,997 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-10 04:29:03,997 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 04:29:03,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-11-10 04:29:03,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 04:29:03,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:03,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:03,998 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 04:29:03,998 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:03,998 INFO L793 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 430#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 431#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 433#L20-2 [2018-11-10 04:29:03,998 INFO L795 eck$LassoCheckResult]: Loop: 433#L20-2 assume true; 435#L19-1 assume !!(main_~y1~0 != main_~y2~0); 437#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 433#L20-2 [2018-11-10 04:29:03,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:03,998 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 2 times [2018-11-10 04:29:03,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:03,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:03,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:04,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash 38925, now seen corresponding path program 1 times [2018-11-10 04:29:04,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:04,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:04,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:04,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889508812, now seen corresponding path program 3 times [2018-11-10 04:29:04,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:04,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:04,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:29:04,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,033 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:04,033 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:04,033 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:04,033 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:04,034 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:29:04,034 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:04,034 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:04,034 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:04,034 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-10 04:29:04,034 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:04,034 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:04,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,087 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:04,087 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:04,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,091 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:04,091 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,120 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,123 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:04,124 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,142 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,158 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:04,158 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,161 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,163 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:04,163 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,179 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,195 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 04:29:04,195 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,198 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:29:04,217 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,325 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:29:04,327 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:04,327 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:04,327 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:04,327 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:04,327 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:29:04,327 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:04,327 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:04,327 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:04,327 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-10 04:29:04,327 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:04,327 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:04,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,378 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:04,378 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:29:04,378 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 [2018-11-10 04:29:04,379 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:04,379 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 04:29:04,379 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:04,379 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:04,379 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:04,379 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 04:29:04,379 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 04:29:04,380 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:04,380 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 [2018-11-10 04:29:04,380 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:04,380 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:04,380 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:04,381 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:04,382 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:04,382 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:04,390 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:29:04,396 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-10 04:29:04,396 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-10 04:29:04,396 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:29:04,398 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-10 04:29:04,398 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:29:04,398 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-10 04:29:04,419 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-10 04:29:04,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:04,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:04,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:04,440 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 04:29:04,440 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-10 04:29:04,452 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 19 states and 25 transitions. Complement of second has 5 states. [2018-11-10 04:29:04,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 04:29:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-10 04:29:04,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-10 04:29:04,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 04:29:04,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-10 04:29:04,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2018-11-10 04:29:04,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 04:29:04,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 15 states and 19 transitions. [2018-11-10 04:29:04,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 04:29:04,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 04:29:04,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2018-11-10 04:29:04,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 04:29:04,454 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-11-10 04:29:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2018-11-10 04:29:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-11-10 04:29:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-10 04:29:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-11-10 04:29:04,456 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-10 04:29:04,456 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-10 04:29:04,456 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 04:29:04,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2018-11-10 04:29:04,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 04:29:04,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 04:29:04,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 04:29:04,458 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-10 04:29:04,458 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 04:29:04,458 INFO L793 eck$LassoCheckResult]: Stem: 507#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 505#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 506#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 508#L20-2 assume true; 509#L19-1 assume !!(main_~y1~0 != main_~y2~0); 514#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 516#L20-2 assume true; 512#L19-1 [2018-11-10 04:29:04,458 INFO L795 eck$LassoCheckResult]: Loop: 512#L19-1 assume !!(main_~y1~0 != main_~y2~0); 513#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 515#L20-2 assume true; 512#L19-1 [2018-11-10 04:29:04,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1804969343, now seen corresponding path program 2 times [2018-11-10 04:29:04,459 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:04,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:04,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:04,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash 44835, now seen corresponding path program 2 times [2018-11-10 04:29:04,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:04,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:04,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:04,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1148833563, now seen corresponding path program 3 times [2018-11-10 04:29:04,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:29:04,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:29:04,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:29:04,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:29:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:29:04,494 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:04,494 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:04,494 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:04,494 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:04,494 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 04:29:04,494 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:04,494 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:04,494 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:04,495 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-10 04:29:04,495 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:04,495 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:04,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,538 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:04,538 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 04:29:04,541 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5023641d-70f1-440b-a3ee-50f83b79998e/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 [2018-11-10 04:29:04,560 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 04:29:04,560 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 04:29:04,716 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 04:29:04,717 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 04:29:04,717 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 04:29:04,717 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 04:29:04,717 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 04:29:04,717 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 04:29:04,717 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 04:29:04,717 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 04:29:04,717 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 04:29:04,717 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-10 04:29:04,717 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 04:29:04,717 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 04:29:04,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 04:29:04,760 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 04:29:04,760 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 04:29:04,760 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 [2018-11-10 04:29:04,760 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:04,760 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:04,760 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:04,760 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:04,761 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:04,761 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:04,763 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 04:29:04,763 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 [2018-11-10 04:29:04,763 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 04:29:04,763 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 04:29:04,763 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 04:29:04,764 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 04:29:04,764 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 04:29:04,765 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 04:29:04,772 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 04:29:04,779 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-10 04:29:04,779 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-10 04:29:04,779 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 04:29:04,780 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-10 04:29:04,780 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 04:29:04,780 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-10 04:29:04,791 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-10 04:29:04,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:29:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:04,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:29:04,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:29:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:29:04,823 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-10 04:29:04,823 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand 5 states. [2018-11-10 04:29:04,837 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 28 states and 38 transitions. Complement of second has 5 states. [2018-11-10 04:29:04,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 04:29:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 04:29:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-10 04:29:04,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-10 04:29:04,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-10 04:29:04,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2018-11-10 04:29:04,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 04:29:04,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2018-11-10 04:29:04,840 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 04:29:04,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 04:29:04,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 04:29:04,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 04:29:04,840 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 04:29:04,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:29:04,840 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 04:29:04,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 04:29:04,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 04:29:04 BoogieIcfgContainer [2018-11-10 04:29:04,845 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 04:29:04,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:29:04,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:29:04,845 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:29:04,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:29:01" (3/4) ... [2018-11-10 04:29:04,848 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 04:29:04,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:29:04,848 INFO L168 Benchmark]: Toolchain (without parser) took 3321.22 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. [2018-11-10 04:29:04,849 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:29:04,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 131.85 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:29:04,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.12 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:29:04,850 INFO L168 Benchmark]: Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:29:04,850 INFO L168 Benchmark]: RCFGBuilder took 180.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:29:04,850 INFO L168 Benchmark]: BuchiAutomizer took 2974.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.0 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:29:04,851 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:29:04,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 131.85 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.12 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 180.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2974.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.0 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.3 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 5 terminating modules (0 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 46 SDslu, 18 SDs, 0 SdLazy, 63 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax156 hnf92 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf96 smp80 dnf100 smp100 tf100 neg96 sie128 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...