./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_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_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 16:22:33,522 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 16:22:33,523 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 16:22:33,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 16:22:33,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 16:22:33,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 16:22:33,532 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 16:22:33,533 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 16:22:33,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 16:22:33,535 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 16:22:33,535 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 16:22:33,535 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 16:22:33,536 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 16:22:33,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 16:22:33,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 16:22:33,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 16:22:33,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 16:22:33,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 16:22:33,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 16:22:33,542 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 16:22:33,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 16:22:33,543 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 16:22:33,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 16:22:33,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 16:22:33,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 16:22:33,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 16:22:33,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 16:22:33,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 16:22:33,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 16:22:33,546 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 16:22:33,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 16:22:33,547 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 16:22:33,547 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 16:22:33,547 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 16:22:33,548 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 16:22:33,548 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 16:22:33,548 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 16:22:33,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 16:22:33,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 16:22:33,556 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 16:22:33,556 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 16:22:33,557 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 16:22:33,557 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 16:22:33,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 16:22:33,558 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 16:22:33,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 16:22:33,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 16:22:33,559 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 16:22:33,560 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 16:22:33,560 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_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2018-12-01 16:22:33,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 16:22:33,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 16:22:33,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 16:22:33,591 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 16:22:33,591 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 16:22:33,592 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-12-01 16:22:33,636 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/data/b7b0dc9e7/fef2e7881e5244d2a0f3eb32fb711963/FLAGc167fd162 [2018-12-01 16:22:34,012 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 16:22:34,013 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-12-01 16:22:34,016 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/data/b7b0dc9e7/fef2e7881e5244d2a0f3eb32fb711963/FLAGc167fd162 [2018-12-01 16:22:34,024 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/bin-2019/uautomizer/data/b7b0dc9e7/fef2e7881e5244d2a0f3eb32fb711963 [2018-12-01 16:22:34,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 16:22:34,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 16:22:34,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 16:22:34,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 16:22:34,029 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 16:22:34,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42aa496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34, skipping insertion in model container [2018-12-01 16:22:34,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 16:22:34,043 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 16:22:34,123 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:22:34,125 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 16:22:34,133 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:22:34,141 INFO L195 MainTranslator]: Completed translation [2018-12-01 16:22:34,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34 WrapperNode [2018-12-01 16:22:34,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 16:22:34,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 16:22:34,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 16:22:34,141 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 16:22:34,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 16:22:34,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 16:22:34,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 16:22:34,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 16:22:34,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... [2018-12-01 16:22:34,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 16:22:34,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 16:22:34,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 16:22:34,170 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 16:22:34,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 16:22:34,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 16:22:34,298 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 16:22:34,298 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-01 16:22:34,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:22:34 BoogieIcfgContainer [2018-12-01 16:22:34,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 16:22:34,299 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 16:22:34,299 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 16:22:34,301 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 16:22:34,302 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:22:34,302 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 04:22:34" (1/3) ... [2018-12-01 16:22:34,302 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ed57845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 04:22:34, skipping insertion in model container [2018-12-01 16:22:34,303 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:22:34,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:22:34" (2/3) ... [2018-12-01 16:22:34,303 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ed57845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 04:22:34, skipping insertion in model container [2018-12-01 16:22:34,303 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:22:34,303 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:22:34" (3/3) ... [2018-12-01 16:22:34,304 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-12-01 16:22:34,337 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 16:22:34,337 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 16:22:34,337 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 16:22:34,337 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 16:22:34,337 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 16:22:34,338 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 16:22:34,338 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 16:22:34,338 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 16:22:34,338 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 16:22:34,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-01 16:22:34,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:34,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:22:34,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:22:34,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 16:22:34,362 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:22:34,362 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 16:22:34,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-01 16:22:34,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:34,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:22:34,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:22:34,363 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 16:22:34,363 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:22:34,367 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-12-01 16:22:34,368 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2018-12-01 16:22:34,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-01 16:22:34,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-01 16:22:34,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,438 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-01 16:22:34,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,489 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:34,490 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:34,490 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:34,490 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:34,490 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:22:34,490 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:34,490 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:34,490 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:34,490 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 16:22:34,490 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:34,491 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:34,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,604 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:34,605 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,608 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:34,627 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:34,627 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,630 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,630 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:34,654 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:34,654 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,656 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,656 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:34,659 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:34,659 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,674 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,674 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:22:34,690 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:34,706 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:22:34,707 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:34,707 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:34,707 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:34,707 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:34,707 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:22:34,707 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:34,708 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:34,708 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:34,708 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 16:22:34,708 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:34,708 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:34,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,756 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:34,759 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:22:34,760 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:22:34,761 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:34,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:34,761 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:34,761 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:34,764 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:22:34,764 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:22:34,768 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:34,768 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 [2018-12-01 16:22:34,769 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:34,769 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:34,769 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:34,769 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:34,771 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:22:34,771 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:22:34,775 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:34,775 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 [2018-12-01 16:22:34,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:34,776 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:22:34,776 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:34,776 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-01 16:22:34,777 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:34,777 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-01 16:22:34,777 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:22:34,781 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:34,781 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 [2018-12-01 16:22:34,781 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:34,782 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:22:34,782 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:34,782 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:34,782 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:34,782 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:22:34,782 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:22:34,785 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:22:34,787 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:22:34,787 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:22:34,788 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:22:34,789 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:22:34,789 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:22:34,789 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-01 16:22:34,790 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:22:34,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:34,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:34,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:22:34,833 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:22:34,834 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-01 16:22:34,864 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2018-12-01 16:22:34,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 16:22:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:22:34,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-12-01 16:22:34,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-01 16:22:34,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:34,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-01 16:22:34,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:34,868 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-01 16:22:34,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:34,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-01 16:22:34,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:34,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-01 16:22:34,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-01 16:22:34,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-01 16:22:34,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-01 16:22:34,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:22:34,874 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-01 16:22:34,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-01 16:22:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-01 16:22:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-01 16:22:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-01 16:22:34,890 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-01 16:22:34,890 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-01 16:22:34,890 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 16:22:34,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-01 16:22:34,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:34,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:22:34,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:22:34,891 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-01 16:22:34,891 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:22:34,891 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2018-12-01 16:22:34,891 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2018-12-01 16:22:34,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-01 16:22:34,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-12-01 16:22:34,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2018-12-01 16:22:34,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:34,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:34,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:34,918 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:34,918 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:34,918 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:34,918 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:34,918 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:22:34,918 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:34,918 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:34,918 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:34,919 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 16:22:34,919 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:34,919 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:34,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:34,971 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:34,971 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,973 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,973 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:34,988 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:34,988 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_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:34,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:34,991 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:35,006 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:35,006 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:35,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:35,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:35,032 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:22:35,032 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:35,035 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:35,035 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:35,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:22:35,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:35,091 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:22:35,092 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:35,092 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:35,092 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:35,092 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:35,092 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:22:35,092 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:35,092 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:35,092 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:35,092 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 16:22:35,093 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:35,093 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:35,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,130 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:35,130 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:22:35,130 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 [2018-12-01 16:22:35,130 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:35,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:35,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:35,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:35,132 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:22:35,132 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:22:35,134 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:35,134 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 [2018-12-01 16:22:35,135 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:35,135 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:35,135 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:35,135 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:35,136 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:22:35,136 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:22:35,139 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:35,139 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 [2018-12-01 16:22:35,139 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:35,139 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:22:35,139 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:35,140 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:35,140 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:35,140 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:22:35,140 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:22:35,141 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:22:35,141 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 [2018-12-01 16:22:35,141 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:35,141 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:22:35,141 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:35,141 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:35,141 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:35,142 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:22:35,142 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:22:35,144 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:22:35,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:22:35,146 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:22:35,146 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:22:35,146 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:22:35,146 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:22:35,146 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 16:22:35,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:22:35,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:22:35,170 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:22:35,170 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-01 16:22:35,181 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2018-12-01 16:22:35,181 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 [2018-12-01 16:22:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:22:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-01 16:22:35,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-01 16:22:35,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 16:22:35,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-01 16:22:35,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-12-01 16:22:35,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:35,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2018-12-01 16:22:35,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-01 16:22:35,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-01 16:22:35,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-12-01 16:22:35,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:22:35,183 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-12-01 16:22:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-12-01 16:22:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2018-12-01 16:22:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-01 16:22:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-01 16:22:35,184 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-01 16:22:35,184 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-01 16:22:35,184 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 16:22:35,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-12-01 16:22:35,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:22:35,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:22:35,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:22:35,185 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-12-01 16:22:35,185 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:22:35,185 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2018-12-01 16:22:35,185 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2018-12-01 16:22:35,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-12-01 16:22:35,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:35,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:35,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:22:35,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-12-01 16:22:35,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:35,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:35,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:22:35,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,195 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2018-12-01 16:22:35,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:22:35,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:22:35,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,196 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:22:35,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:22:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:22:35,211 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:35,211 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:35,211 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:35,211 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:35,211 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:22:35,211 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:35,211 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:35,211 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:35,211 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 16:22:35,211 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:35,212 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:35,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,248 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:35,248 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:35,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:22:35,250 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94c1f87f-c9f0-4668-8570-063cfc0d175d/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 [2018-12-01 16:22:35,265 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:22:35,266 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:22:35,305 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:22:35,306 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:22:35,306 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:22:35,306 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:22:35,306 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:22:35,306 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:22:35,306 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:22:35,306 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:22:35,307 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:22:35,307 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 16:22:35,307 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:22:35,307 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:22:35,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:22:35,347 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:22:35,347 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:22:35,347 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 [2018-12-01 16:22:35,348 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:22:35,348 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:22:35,348 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:22:35,348 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:22:35,348 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:22:35,348 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:22:35,348 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:22:35,350 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:22:35,352 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:22:35,352 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:22:35,352 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:22:35,352 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:22:35,352 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:22:35,352 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 16:22:35,353 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:22:35,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:22:35,379 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:22:35,380 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-01 16:22:35,388 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-12-01 16:22:35,389 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 [2018-12-01 16:22:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:22:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-01 16:22:35,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 16:22:35,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,390 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 16:22:35,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:22:35,415 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:22:35,415 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-01 16:22:35,425 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-12-01 16:22:35,425 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 [2018-12-01 16:22:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:22:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-01 16:22:35,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 16:22:35,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,426 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 16:22:35,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:22:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:22:35,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:22:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:22:35,451 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:22:35,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-01 16:22:35,460 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2018-12-01 16:22:35,460 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 [2018-12-01 16:22:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:22:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-01 16:22:35,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 16:22:35,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-01 16:22:35,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-01 16:22:35,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:22:35,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2018-12-01 16:22:35,462 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 16:22:35,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-12-01 16:22:35,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 16:22:35,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 16:22:35,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 16:22:35,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 16:22:35,463 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:22:35,463 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:22:35,463 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:22:35,463 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 16:22:35,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 16:22:35,464 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 16:22:35,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 16:22:35,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 04:22:35 BoogieIcfgContainer [2018-12-01 16:22:35,468 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 16:22:35,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 16:22:35,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 16:22:35,469 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 16:22:35,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:22:34" (3/4) ... [2018-12-01 16:22:35,471 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 16:22:35,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 16:22:35,472 INFO L168 Benchmark]: Toolchain (without parser) took 1445.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 954.4 MB in the beginning and 848.9 MB in the end (delta: 105.5 MB). Peak memory consumption was 211.4 MB. Max. memory is 11.5 GB. [2018-12-01 16:22:35,473 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-01 16:22:35,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.34 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 16:22:35,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.71 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:22:35,474 INFO L168 Benchmark]: Boogie Preprocessor took 10.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 16:22:35,474 INFO L168 Benchmark]: RCFGBuilder took 129.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-01 16:22:35,475 INFO L168 Benchmark]: BuchiAutomizer took 1169.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 848.9 MB in the end (delta: 243.0 MB). Peak memory consumption was 243.0 MB. Max. memory is 11.5 GB. [2018-12-01 16:22:35,475 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 848.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:22:35,477 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.34 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.71 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 129.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1169.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 848.9 MB in the end (delta: 243.0 MB). Peak memory consumption was 243.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 848.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...