./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/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 0.1.23-5842f4b [2018-11-18 16:59:25,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:59:25,745 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:59:25,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:59:25,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:59:25,752 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:59:25,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:59:25,754 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:59:25,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:59:25,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:59:25,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:59:25,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:59:25,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:59:25,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:59:25,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:59:25,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:59:25,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:59:25,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:59:25,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:59:25,763 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:59:25,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:59:25,765 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:59:25,766 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:59:25,767 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:59:25,767 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:59:25,768 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:59:25,768 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:59:25,769 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:59:25,770 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:59:25,770 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:59:25,770 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:59:25,771 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:59:25,771 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:59:25,771 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:59:25,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:59:25,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:59:25,772 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 16:59:25,783 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:59:25,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:59:25,784 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:59:25,784 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:59:25,784 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:59:25,784 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 16:59:25,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 16:59:25,785 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:59:25,786 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 16:59:25,787 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:59:25,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:59:25,787 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 16:59:25,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:59:25,787 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:59:25,787 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 16:59:25,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 16:59:25,788 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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/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 [2018-11-18 16:59:25,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:59:25,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:59:25,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:59:25,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:59:25,824 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:59:25,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-18 16:59:25,867 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/data/2a01d12d3/e4fdb3d92094415aadac853b1991d2fb/FLAGad8083da1 [2018-11-18 16:59:26,274 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:59:26,274 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-18 16:59:26,278 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/data/2a01d12d3/e4fdb3d92094415aadac853b1991d2fb/FLAGad8083da1 [2018-11-18 16:59:26,289 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/data/2a01d12d3/e4fdb3d92094415aadac853b1991d2fb [2018-11-18 16:59:26,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:59:26,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:59:26,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:59:26,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:59:26,295 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:59:26,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb57ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26, skipping insertion in model container [2018-11-18 16:59:26,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:59:26,314 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:59:26,418 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:59:26,420 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:59:26,429 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:59:26,437 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:59:26,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26 WrapperNode [2018-11-18 16:59:26,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:59:26,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:59:26,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:59:26,438 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:59:26,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:59:26,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:59:26,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:59:26,456 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:59:26,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... [2018-11-18 16:59:26,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:59:26,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:59:26,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:59:26,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:59:26,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:59:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:59:26,631 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:59:26,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:59:26 BoogieIcfgContainer [2018-11-18 16:59:26,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:59:26,632 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 16:59:26,632 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 16:59:26,635 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 16:59:26,636 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:59:26,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 04:59:26" (1/3) ... [2018-11-18 16:59:26,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bb80d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:59:26, skipping insertion in model container [2018-11-18 16:59:26,637 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:59:26,637 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:59:26" (2/3) ... [2018-11-18 16:59:26,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60bb80d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 04:59:26, skipping insertion in model container [2018-11-18 16:59:26,637 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 16:59:26,637 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:59:26" (3/3) ... [2018-11-18 16:59:26,639 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c [2018-11-18 16:59:26,675 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:59:26,676 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 16:59:26,676 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 16:59:26,676 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 16:59:26,676 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:59:26,676 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:59:26,676 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 16:59:26,676 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:59:26,676 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 16:59:26,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-18 16:59:26,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:26,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:59:26,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:59:26,701 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:59:26,702 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 16:59:26,702 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 16:59:26,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-18 16:59:26,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:26,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:59:26,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:59:26,703 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:59:26,703 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 16:59:26,708 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-11-18 16:59:26,708 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume true; 6#L17-1true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L18true assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 5#L18-2true [2018-11-18 16:59:26,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 16:59:26,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:26,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:26,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:26,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:26,769 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-18 16:59:26,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:26,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:26,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:26,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-18 16:59:26,777 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:26,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:26,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:26,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:26,835 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:26,836 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:26,836 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:26,836 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:26,836 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:59:26,836 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:26,836 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:26,836 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:26,836 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 16:59:26,837 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:26,837 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:26,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:26,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:26,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:26,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:26,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:26,978 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:26,978 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:26,982 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:26,982 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,000 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:59:27,000 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,018 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:59:27,019 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:27,019 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:27,019 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:27,019 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:27,019 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:59:27,019 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,019 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:27,019 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:27,019 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 16:59:27,019 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:27,019 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:27,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,092 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:27,095 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:59:27,096 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,097 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,097 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:27,098 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,098 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,098 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,100 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:27,100 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:27,107 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:59:27,111 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:59:27,111 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:59:27,112 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:59:27,113 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:59:27,113 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:59:27,114 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 16:59:27,115 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:59:27,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:27,184 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 [2018-11-18 16:59:27,185 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-11-18 16:59:27,216 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 27 states and 32 transitions. Complement of second has 8 states. [2018-11-18 16:59:27,216 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 [2018-11-18 16:59:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-11-18 16:59:27,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-18 16:59:27,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 16:59:27,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-18 16:59:27,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-18 16:59:27,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:27,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-11-18 16:59:27,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 16:59:27,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 16:59:27,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-18 16:59:27,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:59:27,226 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 16:59:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-18 16:59:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 16:59:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 16:59:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-18 16:59:27,242 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 16:59:27,242 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 16:59:27,242 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 16:59:27,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-18 16:59:27,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:27,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:59:27,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:59:27,242 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 16:59:27,243 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 16:59:27,243 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 80#L18-2 assume true; 85#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 86#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 81#L18-2 [2018-11-18 16:59:27,243 INFO L796 eck$LassoCheckResult]: Loop: 81#L18-2 assume true; 82#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 89#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 81#L18-2 [2018-11-18 16:59:27,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-18 16:59:27,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:27,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-11-18 16:59:27,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:27,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-18 16:59:27,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:59:27,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,280 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:27,280 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:27,280 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:27,280 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:27,280 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:59:27,280 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,280 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:27,281 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:27,281 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 16:59:27,281 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:27,281 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:27,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,337 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:27,337 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,343 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,360 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:27,360 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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,362 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,378 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:27,378 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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,380 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,380 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,397 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:59:27,397 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,413 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:59:27,414 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:27,415 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:27,415 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:27,415 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:27,415 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:59:27,415 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,415 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:27,415 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:27,415 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 16:59:27,415 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:27,415 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:27,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,469 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:27,469 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:59:27,469 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,470 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,470 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,470 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,470 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,472 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:59:27,473 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:59:27,478 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:27,478 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,479 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,479 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,479 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,481 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:59:27,481 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:59:27,488 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:27,488 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,488 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,489 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:27,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,490 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:27,490 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:27,493 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:59:27,495 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:59:27,495 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:59:27,496 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:59:27,496 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:59:27,496 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:59:27,496 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 16:59:27,496 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:59:27,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:27,568 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 [2018-11-18 16:59:27,568 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 16:59:27,576 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 22 transitions. Complement of second has 7 states. [2018-11-18 16:59:27,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:59:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-18 16:59:27,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 16:59:27,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 16:59:27,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-18 16:59:27,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-11-18 16:59:27,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:27,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-11-18 16:59:27,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 16:59:27,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 16:59:27,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-18 16:59:27,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:59:27,581 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-18 16:59:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-18 16:59:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 16:59:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 16:59:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-11-18 16:59:27,585 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-18 16:59:27,585 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-18 16:59:27,585 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 16:59:27,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2018-11-18 16:59:27,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 16:59:27,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:59:27,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:59:27,587 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2018-11-18 16:59:27,587 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 16:59:27,587 INFO L794 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 156#L18-2 assume true; 168#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 166#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 165#L18-2 assume true; 161#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 162#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 157#L18-2 [2018-11-18 16:59:27,587 INFO L796 eck$LassoCheckResult]: Loop: 157#L18-2 assume true; 158#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 167#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 157#L18-2 [2018-11-18 16:59:27,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash 150863075, now seen corresponding path program 2 times [2018-11-18 16:59:27,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:27,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,597 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 3 times [2018-11-18 16:59:27,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:59:27,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1826081864, now seen corresponding path program 2 times [2018-11-18 16:59:27,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:27,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:27,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:59:27,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:27,641 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:27,641 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:27,641 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:27,641 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:27,641 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:59:27,641 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,642 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:27,642 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:27,642 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 16:59:27,642 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:27,642 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:27,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,685 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:27,685 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,687 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,688 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,690 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:27,690 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,707 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,707 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,723 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:27,723 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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,738 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:27,753 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,755 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:27,755 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,782 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:59:27,782 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:27,798 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:59:27,799 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:27,800 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:27,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:27,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:27,800 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:59:27,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:27,800 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:27,800 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:27,800 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 16:59:27,800 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:27,800 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:27,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:27,843 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:27,843 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:59:27,843 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,844 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,844 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:27,844 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,844 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,844 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,845 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:27,845 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:27,846 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:27,850 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,851 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,851 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:27,851 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,851 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,851 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,851 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:27,852 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:27,852 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:27,853 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,853 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,853 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,853 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,854 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,855 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 16:59:27,855 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 16:59:27,859 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:27,859 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:27,860 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:27,860 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:27,860 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:27,860 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:27,860 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:27,861 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:27,861 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:27,864 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:59:27,866 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:59:27,866 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:59:27,866 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:59:27,866 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:59:27,866 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:59:27,866 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 16:59:27,867 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:59:27,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:27,901 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 [2018-11-18 16:59:27,901 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 16:59:27,910 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 21 states and 28 transitions. Complement of second has 7 states. [2018-11-18 16:59:27,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:59:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-18 16:59:27,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 16:59:27,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,911 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:59:27,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:27,946 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 [2018-11-18 16:59:27,946 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 16:59:27,959 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 21 states and 28 transitions. Complement of second has 7 states. [2018-11-18 16:59:27,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:59:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-18 16:59:27,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 16:59:27,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:27,960 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 16:59:27,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:27,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:27,996 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 [2018-11-18 16:59:27,996 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-18 16:59:28,007 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 6 states. [2018-11-18 16:59:28,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:59:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-18 16:59:28,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-18 16:59:28,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-18 16:59:28,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-18 16:59:28,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2018-11-18 16:59:28,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 16:59:28,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2018-11-18 16:59:28,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-18 16:59:28,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 16:59:28,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2018-11-18 16:59:28,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 16:59:28,012 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-18 16:59:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2018-11-18 16:59:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 8. [2018-11-18 16:59:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 16:59:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-18 16:59:28,013 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-18 16:59:28,014 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-18 16:59:28,014 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 16:59:28,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-18 16:59:28,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-18 16:59:28,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 16:59:28,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 16:59:28,015 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 16:59:28,015 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 16:59:28,015 INFO L794 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 379#L18-2 [2018-11-18 16:59:28,015 INFO L796 eck$LassoCheckResult]: Loop: 379#L18-2 assume true; 381#L17-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 383#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; 379#L18-2 [2018-11-18 16:59:28,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 16:59:28,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:28,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:28,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:59:28,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-11-18 16:59:28,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:28,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:28,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:59:28,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:28,024 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 3 times [2018-11-18 16:59:28,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:59:28,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:59:28,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:59:28,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:59:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:59:28,048 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:28,048 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:28,049 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:28,049 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:28,049 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 16:59:28,049 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,049 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:28,049 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:28,049 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 16:59:28,049 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:28,049 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:28,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,103 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:28,104 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,108 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:28,108 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:28,111 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:28,111 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Honda state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,126 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:28,126 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:28,128 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 16:59:28,128 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_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,143 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 16:59:28,144 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fc2954ef-7aa0-413b-a358-55fd8c1ed5ba/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,160 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 16:59:28,160 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 16:59:28,177 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 16:59:28,178 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 16:59:28,178 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 16:59:28,178 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 16:59:28,178 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 16:59:28,178 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 16:59:28,178 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 16:59:28,179 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 16:59:28,179 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 16:59:28,179 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 16:59:28,179 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 16:59:28,179 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 16:59:28,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 16:59:28,247 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 16:59:28,247 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 16:59:28,247 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:28,248 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:28,248 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:28,248 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:28,248 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:28,248 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:28,249 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:28,249 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:28,251 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:28,251 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:28,253 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:28,253 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:28,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:28,253 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 16:59:28,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:28,254 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 16:59:28,254 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:28,257 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 16:59:28,257 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 16:59:28,257 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 16:59:28,257 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 16:59:28,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 16:59:28,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 16:59:28,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 16:59:28,258 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 16:59:28,258 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 16:59:28,261 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 16:59:28,263 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 16:59:28,263 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 16:59:28,263 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 16:59:28,263 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 16:59:28,263 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 16:59:28,263 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 16:59:28,264 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 16:59:28,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:59:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:28,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:59:28,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:59:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:59:28,293 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 [2018-11-18 16:59:28,293 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 16:59:28,299 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 18 states and 25 transitions. Complement of second has 6 states. [2018-11-18 16:59:28,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 16:59:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 16:59:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 16:59:28,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-18 16:59:28,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 16:59:28,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-18 16:59:28,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 16:59:28,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 25 transitions. [2018-11-18 16:59:28,302 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:59:28,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-11-18 16:59:28,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 16:59:28,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 16:59:28,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 16:59:28,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 16:59:28,302 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:59:28,302 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:59:28,302 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:59:28,303 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 16:59:28,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:59:28,303 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 16:59:28,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 16:59:28,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 04:59:28 BoogieIcfgContainer [2018-11-18 16:59:28,308 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 16:59:28,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:59:28,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:59:28,308 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:59:28,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:59:26" (3/4) ... [2018-11-18 16:59:28,311 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:59:28,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:59:28,311 INFO L168 Benchmark]: Toolchain (without parser) took 2019.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:59:28,312 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:59:28,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.11 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:59:28,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:59:28,313 INFO L168 Benchmark]: Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:59:28,314 INFO L168 Benchmark]: RCFGBuilder took 165.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:59:28,314 INFO L168 Benchmark]: BuchiAutomizer took 1675.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:59:28,314 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:59:28,316 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 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.11 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 17.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.08 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 165.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1675.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 38 SDslu, 19 SDs, 0 SdLazy, 33 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 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: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 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...