./Ultimate.py --spec ../../sv-benchmarks/c/properties/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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 0.1.23-635dfa2 [2018-12-09 00:58:37,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:58:37,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:58:37,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:58:37,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:58:37,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:58:37,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:58:37,191 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:58:37,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:58:37,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:58:37,193 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:58:37,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:58:37,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:58:37,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:58:37,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:58:37,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:58:37,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:58:37,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:58:37,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:58:37,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:58:37,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:58:37,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:58:37,200 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:58:37,200 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:58:37,200 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:58:37,200 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:58:37,201 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:58:37,201 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:58:37,202 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:58:37,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:58:37,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:58:37,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:58:37,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:58:37,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:58:37,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:58:37,204 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:58:37,204 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 00:58:37,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:58:37,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:58:37,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 00:58:37,212 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 00:58:37,212 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 00:58:37,212 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 00:58:37,212 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 00:58:37,212 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 00:58:37,212 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 00:58:37,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:58:37,213 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 00:58:37,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 00:58:37,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 00:58:37,214 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 00:58:37,215 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 00:58:37,215 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:37,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:58:37,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:58:37,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:58:37,245 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:58:37,245 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:58:37,246 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-09 00:58:37,285 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/data/89afb53a4/c8a4bdc2e64c44aa9148404328915341/FLAG0f196a1f8 [2018-12-09 00:58:37,584 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:58:37,584 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-09 00:58:37,589 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/data/89afb53a4/c8a4bdc2e64c44aa9148404328915341/FLAG0f196a1f8 [2018-12-09 00:58:38,018 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/data/89afb53a4/c8a4bdc2e64c44aa9148404328915341 [2018-12-09 00:58:38,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:58:38,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:58:38,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:58:38,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:58:38,024 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:58:38,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296aed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38, skipping insertion in model container [2018-12-09 00:58:38,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:58:38,042 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:58:38,122 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:58:38,124 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:58:38,133 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:58:38,140 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:58:38,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38 WrapperNode [2018-12-09 00:58:38,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:58:38,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:58:38,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:58:38,141 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:58:38,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:58:38,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:58:38,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:58:38,166 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:58:38,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... [2018-12-09 00:58:38,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:58:38,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:58:38,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:58:38,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:58:38,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:58:38,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:58:38,315 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:58:38,316 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 00:58:38,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:38 BoogieIcfgContainer [2018-12-09 00:58:38,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:58:38,316 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 00:58:38,316 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 00:58:38,319 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 00:58:38,319 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 00:58:38,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 12:58:38" (1/3) ... [2018-12-09 00:58:38,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48f9af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:58:38, skipping insertion in model container [2018-12-09 00:58:38,320 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 00:58:38,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:58:38" (2/3) ... [2018-12-09 00:58:38,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48f9af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:58:38, skipping insertion in model container [2018-12-09 00:58:38,321 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 00:58:38,321 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:38" (3/3) ... [2018-12-09 00:58:38,322 INFO L375 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-12-09 00:58:38,355 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:58:38,356 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 00:58:38,356 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 00:58:38,356 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 00:58:38,356 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:58:38,356 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:58:38,356 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 00:58:38,356 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:58:38,356 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 00:58:38,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 00:58:38,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:38,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:38,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:38,381 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 00:58:38,381 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:38,381 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 00:58:38,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 00:58:38,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:38,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:38,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:38,382 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 00:58:38,382 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:38,387 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2018-12-09 00:58:38,387 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2018-12-09 00:58:38,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-09 00:58:38,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:38,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:38,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:38,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-12-09 00:58:38,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:38,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:38,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:38,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-12-09 00:58:38,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:38,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:38,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:38,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:38,510 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:38,511 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:38,511 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:38,511 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:38,511 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:38,511 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:38,512 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:38,512 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:38,512 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-09 00:58:38,512 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:38,512 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:38,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,605 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:38,605 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:38,609 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:38,609 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:38,614 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:38,615 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:38,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:38,630 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:38,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:38,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:38,740 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:38,741 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:38,741 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:38,742 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:38,742 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:38,742 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:38,742 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:38,742 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:38,742 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:38,742 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-09 00:58:38,742 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:38,742 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:38,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:38,806 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:38,809 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:38,810 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 [2018-12-09 00:58:38,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:38,811 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:38,812 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:38,812 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:38,816 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:38,816 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:38,843 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:38,853 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-09 00:58:38,854 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 00:58:38,855 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:38,856 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-09 00:58:38,857 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:38,857 INFO L520 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] [2018-12-09 00:58:38,860 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 00:58:38,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:38,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:38,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:38,920 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 [2018-12-09 00:58:38,921 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-09 00:58:38,972 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-12-09 00:58:38,972 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 [2018-12-09 00:58:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 00:58:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-09 00:58:38,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-09 00:58:38,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:38,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 00:58:38,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:38,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-09 00:58:38,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:38,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-09 00:58:38,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:38,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-09 00:58:38,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 00:58:38,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 00:58:38,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-09 00:58:38,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 00:58:38,981 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 00:58:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-09 00:58:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-09 00:58:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-09 00:58:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-09 00:58:38,996 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 00:58:38,996 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 00:58:38,996 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 00:58:38,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-09 00:58:38,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:38,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:38,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:38,996 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 00:58:38,996 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:38,997 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2018-12-09 00:58:38,997 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2018-12-09 00:58:38,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-12-09 00:58:38,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:38,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:38,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:38,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:38,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-12-09 00:58:39,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:39,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,007 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-12-09 00:58:39,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:39,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,051 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:39,051 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:39,051 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:39,051 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:39,051 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:39,051 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:39,051 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:39,051 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:39,051 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-09 00:58:39,051 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:39,051 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:39,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,105 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:39,105 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,107 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,130 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,130 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,132 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,133 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,134 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,135 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,149 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,167 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:39,167 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,283 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:39,284 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:39,284 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:39,284 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:39,284 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:39,284 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:39,284 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:39,284 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:39,284 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:39,285 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-12-09 00:58:39,285 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:39,285 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:39,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,345 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:39,345 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:39,346 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 [2018-12-09 00:58:39,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,346 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,346 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,346 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,347 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:39,347 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:39,349 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,350 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 [2018-12-09 00:58:39,350 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,350 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:39,350 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,351 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,351 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,351 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:39,351 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:39,351 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,352 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 [2018-12-09 00:58:39,352 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,353 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:39,354 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:39,364 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:39,369 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 00:58:39,369 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 00:58:39,369 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:39,370 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-09 00:58:39,370 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:39,370 INFO L520 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] [2018-12-09 00:58:39,372 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 00:58:39,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:39,399 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 [2018-12-09 00:58:39,400 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-09 00:58:39,420 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2018-12-09 00:58:39,420 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 [2018-12-09 00:58:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-09 00:58:39,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 00:58:39,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 00:58:39,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-09 00:58:39,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-12-09 00:58:39,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:39,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-12-09 00:58:39,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-09 00:58:39,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 00:58:39,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-12-09 00:58:39,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 00:58:39,423 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-09 00:58:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-12-09 00:58:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 00:58:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 00:58:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-12-09 00:58:39,425 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-09 00:58:39,425 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-09 00:58:39,425 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 00:58:39,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-12-09 00:58:39,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 00:58:39,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:39,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:39,426 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2018-12-09 00:58:39,426 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:39,426 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2018-12-09 00:58:39,426 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2018-12-09 00:58:39,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,426 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2018-12-09 00:58:39,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:39,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-12-09 00:58:39,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:39,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2018-12-09 00:58:39,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:39,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,481 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:39,481 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:39,481 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:39,482 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:39,482 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:39,482 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:39,482 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:39,482 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:39,482 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-09 00:58:39,482 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:39,482 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:39,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,527 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:39,527 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,529 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,530 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,531 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,545 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,545 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,559 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,559 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,561 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,562 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,563 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,563 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,577 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,578 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,592 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:39,592 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,594 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:39,594 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:39,611 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:39,611 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:39,697 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:39,698 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:39,699 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:39,699 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:39,699 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:39,699 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:39,699 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:39,699 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:39,699 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:39,699 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-12-09 00:58:39,699 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:39,699 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:39,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,744 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:39,744 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:39,744 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 [2018-12-09 00:58:39,744 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,744 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:39,745 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,745 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,745 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,745 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:39,745 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:39,746 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,746 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 [2018-12-09 00:58:39,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,746 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:39,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,747 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,747 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:39,747 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:39,747 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,747 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 [2018-12-09 00:58:39,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,748 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,748 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,749 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:39,749 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:39,750 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,750 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 [2018-12-09 00:58:39,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,751 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:39,752 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:39,753 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:39,754 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 [2018-12-09 00:58:39,754 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:39,754 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:39,754 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:39,754 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:39,755 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:39,755 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:39,763 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:39,767 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-09 00:58:39,767 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 00:58:39,767 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:39,768 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-09 00:58:39,768 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:39,768 INFO L520 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] [2018-12-09 00:58:39,770 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 00:58:39,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:39,798 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 [2018-12-09 00:58:39,798 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-09 00:58:39,826 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-12-09 00:58:39,826 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 [2018-12-09 00:58:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-09 00:58:39,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 00:58:39,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,827 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 00:58:39,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:39,862 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 [2018-12-09 00:58:39,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-09 00:58:39,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-12-09 00:58:39,878 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 [2018-12-09 00:58:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-12-09 00:58:39,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 00:58:39,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,878 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 00:58:39,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:39,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:39,914 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 [2018-12-09 00:58:39,914 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-12-09 00:58:39,937 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2018-12-09 00:58:39,937 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 [2018-12-09 00:58:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-09 00:58:39,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 00:58:39,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-09 00:58:39,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-09 00:58:39,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:39,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2018-12-09 00:58:39,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 00:58:39,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2018-12-09 00:58:39,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 00:58:39,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-09 00:58:39,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-12-09 00:58:39,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 00:58:39,939 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-09 00:58:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-12-09 00:58:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2018-12-09 00:58:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-09 00:58:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-12-09 00:58:39,941 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-09 00:58:39,941 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-09 00:58:39,941 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 00:58:39,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-12-09 00:58:39,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 00:58:39,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:39,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:39,941 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 00:58:39,941 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:39,942 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2018-12-09 00:58:39,942 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2018-12-09 00:58:39,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-12-09 00:58:39,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2018-12-09 00:58:39,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:39,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2018-12-09 00:58:39,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:39,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:39,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:39,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:39,973 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:39,974 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:39,974 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:39,974 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:39,974 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:39,974 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:39,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:39,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:39,974 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-12-09 00:58:39,974 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:39,974 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:39,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:39,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,025 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:40,026 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,027 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,027 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,030 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,030 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,054 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,056 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,056 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,085 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,085 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,088 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,090 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,090 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,105 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,105 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:40,122 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,215 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:40,216 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:40,216 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:40,217 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:40,217 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:40,217 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:40,217 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:40,217 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:40,217 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:40,217 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-12-09 00:58:40,217 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:40,217 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:40,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,264 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:40,264 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:40,265 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 [2018-12-09 00:58:40,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,265 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,265 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,266 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,266 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,266 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,267 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,267 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 [2018-12-09 00:58:40,267 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,267 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,267 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,267 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,267 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,268 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,268 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,268 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,268 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 [2018-12-09 00:58:40,269 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,269 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,269 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,269 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,269 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,269 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,269 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,270 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,270 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 [2018-12-09 00:58:40,270 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,271 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:40,271 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:40,273 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,273 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 [2018-12-09 00:58:40,274 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,274 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,274 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,274 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,275 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:40,275 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:40,281 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:40,285 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-09 00:58:40,285 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 00:58:40,285 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:40,286 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-09 00:58:40,286 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:40,286 INFO L520 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] [2018-12-09 00:58:40,288 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 00:58:40,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:40,313 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 [2018-12-09 00:58:40,313 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-09 00:58:40,326 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2018-12-09 00:58:40,326 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 [2018-12-09 00:58:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 00:58:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-09 00:58:40,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-09 00:58:40,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:40,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 00:58:40,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:40,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-09 00:58:40,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:40,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2018-12-09 00:58:40,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 00:58:40,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2018-12-09 00:58:40,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 00:58:40,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 00:58:40,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-12-09 00:58:40,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 00:58:40,328 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-12-09 00:58:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-12-09 00:58:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-12-09 00:58:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-12-09 00:58:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-12-09 00:58:40,329 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-12-09 00:58:40,329 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-12-09 00:58:40,329 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 00:58:40,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2018-12-09 00:58:40,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 00:58:40,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:40,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:40,330 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-09 00:58:40,330 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 00:58:40,331 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-12-09 00:58:40,331 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-12-09 00:58:40,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-12-09 00:58:40,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:40,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:40,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:40,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-12-09 00:58:40,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:40,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:40,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:40,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2018-12-09 00:58:40,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:40,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:40,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:40,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:40,365 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:40,366 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:40,366 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:40,366 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:40,366 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:40,366 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:40,366 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:40,366 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:40,366 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-12-09 00:58:40,366 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:40,366 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:40,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,417 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:40,417 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,419 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,436 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,436 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,439 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,439 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,441 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,441 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,455 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,455 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,457 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,457 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,471 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,471 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,473 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,473 INFO L448 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_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,488 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,488 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,502 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:40,502 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,505 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:40,505 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:40,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:40,523 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:40,728 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:40,730 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:40,730 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:40,730 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:40,730 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:40,730 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:40,730 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:40,730 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:40,730 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:40,730 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-12-09 00:58:40,731 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:40,731 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:40,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:40,799 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:40,799 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:40,800 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 [2018-12-09 00:58:40,800 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,800 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,800 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,800 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,801 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:40,801 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:40,801 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,802 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 [2018-12-09 00:58:40,802 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,802 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,802 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,802 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,802 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,802 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,802 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,803 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,803 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 [2018-12-09 00:58:40,803 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,803 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,803 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,803 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,804 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:40,804 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:40,805 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,805 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 [2018-12-09 00:58:40,805 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,806 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,806 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,806 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,806 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,806 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,806 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,806 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,807 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 [2018-12-09 00:58:40,807 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,807 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:40,807 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:40,807 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:40,807 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,807 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 00:58:40,807 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:40,807 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:40,808 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 [2018-12-09 00:58:40,808 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:40,808 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-09 00:58:40,808 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 00:58:40,808 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:40,810 INFO L402 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2018-12-09 00:58:40,810 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-12-09 00:58:40,828 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:40,838 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-09 00:58:40,838 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-09 00:58:40,839 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:40,840 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-12-09 00:58:40,840 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:40,840 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-12-09 00:58:40,842 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 00:58:40,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:40,899 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 [2018-12-09 00:58:40,899 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-09 00:58:40,917 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2018-12-09 00:58:40,917 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 [2018-12-09 00:58:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-09 00:58:40,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 00:58:40,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:40,918 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 00:58:40,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:40,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2018-12-09 00:58:40,952 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-09 00:58:40,974 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 11 states and 15 transitions. Complement of second has 6 states. [2018-12-09 00:58:40,974 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 [2018-12-09 00:58:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-09 00:58:40,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 00:58:40,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:40,975 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 00:58:40,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:40,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:41,012 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 2 loop predicates [2018-12-09 00:58:41,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-09 00:58:41,030 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2018-12-09 00:58:41,031 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 [2018-12-09 00:58:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-12-09 00:58:41,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 00:58:41,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-09 00:58:41,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-09 00:58:41,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2018-12-09 00:58:41,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-09 00:58:41,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2018-12-09 00:58:41,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-09 00:58:41,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-09 00:58:41,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-09 00:58:41,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 00:58:41,034 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-09 00:58:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-09 00:58:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2018-12-09 00:58:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-09 00:58:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-09 00:58:41,035 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 00:58:41,035 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 00:58:41,035 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-09 00:58:41,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-09 00:58:41,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 00:58:41,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 00:58:41,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 00:58:41,036 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-09 00:58:41,036 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-12-09 00:58:41,036 INFO L794 eck$LassoCheckResult]: Stem: 554#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 555#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 556#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-12-09 00:58:41,036 INFO L796 eck$LassoCheckResult]: Loop: 560#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 559#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-12-09 00:58:41,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2018-12-09 00:58:41,037 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:41,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:41,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:41,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:41,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2018-12-09 00:58:41,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:41,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:41,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 00:58:41,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:41,046 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2018-12-09 00:58:41,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 00:58:41,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 00:58:41,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:58:41,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 00:58:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 00:58:41,083 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:41,083 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:41,083 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:41,083 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:41,083 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 00:58:41,083 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:41,083 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:41,083 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:41,083 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-09 00:58:41,083 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:41,083 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:41,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,146 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:41,146 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/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 [2018-12-09 00:58:41,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:41,148 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:41,162 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:41,162 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:41,165 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:41,165 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:41,181 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 00:58:41,181 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:41,183 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 00:58:41,183 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_deb1af1b-bb50-4de7-b4e9-638ae2345714/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:41,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 00:58:41,211 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 00:58:41,455 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 00:58:41,457 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 00:58:41,457 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 00:58:41,457 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 00:58:41,457 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 00:58:41,457 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 00:58:41,457 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 00:58:41,457 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 00:58:41,457 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 00:58:41,457 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-09 00:58:41,458 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 00:58:41,458 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 00:58:41,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 00:58:41,532 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 00:58:41,532 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 00:58:41,532 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 [2018-12-09 00:58:41,533 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:41,533 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:41,533 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:41,533 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:41,534 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:41,534 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:41,535 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:41,536 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 [2018-12-09 00:58:41,536 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:41,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:41,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 00:58:41,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:41,537 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 00:58:41,537 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 00:58:41,537 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 00:58:41,538 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 [2018-12-09 00:58:41,538 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 00:58:41,538 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 00:58:41,538 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 00:58:41,538 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 00:58:41,538 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 00:58:41,538 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-09 00:58:41,538 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 00:58:41,541 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 00:58:41,544 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-09 00:58:41,544 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-09 00:58:41,544 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 00:58:41,544 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 00:58:41,544 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 00:58:41,544 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] [2018-12-09 00:58:41,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 00:58:41,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:58:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:41,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:58:41,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:58:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:58:41,574 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 00:58:41,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-09 00:58:41,584 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 27 states and 41 transitions. Complement of second has 6 states. [2018-12-09 00:58:41,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 00:58:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 00:58:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-12-09 00:58:41,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-09 00:58:41,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-12-09 00:58:41,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2018-12-09 00:58:41,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 00:58:41,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2018-12-09 00:58:41,586 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 00:58:41,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-12-09 00:58:41,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 00:58:41,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 00:58:41,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 00:58:41,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 00:58:41,586 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 00:58:41,586 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 00:58:41,586 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 00:58:41,586 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-09 00:58:41,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 00:58:41,587 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 00:58:41,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 00:58:41,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 12:58:41 BoogieIcfgContainer [2018-12-09 00:58:41,590 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 00:58:41,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 00:58:41,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 00:58:41,591 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 00:58:41,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:58:38" (3/4) ... [2018-12-09 00:58:41,593 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 00:58:41,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 00:58:41,594 INFO L168 Benchmark]: Toolchain (without parser) took 3573.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:58:41,595 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:58:41,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.36 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:58:41,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:58:41,596 INFO L168 Benchmark]: Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:58:41,596 INFO L168 Benchmark]: RCFGBuilder took 136.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 00:58:41,596 INFO L168 Benchmark]: BuchiAutomizer took 3274.14 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-12-09 00:58:41,596 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:58:41,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.36 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.55 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.10 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 939.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 136.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3274.14 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -34.3 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 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 -1 * y2 + y1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y2 + -2 * y1 + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 45 SDslu, 3 SDs, 0 SdLazy, 97 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf92 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 32ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...