./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:27:18,002 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:27:18,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:27:18,009 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:27:18,009 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:27:18,010 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:27:18,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:27:18,011 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:27:18,012 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:27:18,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:27:18,013 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:27:18,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:27:18,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:27:18,014 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:27:18,014 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:27:18,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:27:18,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:27:18,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:27:18,017 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:27:18,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:27:18,018 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:27:18,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:27:18,019 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:27:18,020 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:27:18,020 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:27:18,020 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:27:18,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:27:18,021 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:27:18,021 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:27:18,022 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:27:18,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:27:18,022 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:27:18,022 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:27:18,022 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:27:18,023 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:27:18,023 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:27:18,023 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 12:27:18,031 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:27:18,031 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:27:18,032 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 12:27:18,032 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 12:27:18,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 12:27:18,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 12:27:18,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:27:18,033 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 12:27:18,033 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:27:18,034 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 12:27:18,034 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 12:27:18,034 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 12:27:18,034 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_34fa9083-a43c-497f-959c-bbc41e32000b/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 -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2018-12-09 12:27:18,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:27:18,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:27:18,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:27:18,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:27:18,060 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:27:18,060 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-12-09 12:27:18,093 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/data/ce34e1f1d/259df874989f48bcb35da57eaa362a4c/FLAGde43f40c6 [2018-12-09 12:27:18,461 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:27:18,462 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-12-09 12:27:18,465 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/data/ce34e1f1d/259df874989f48bcb35da57eaa362a4c/FLAGde43f40c6 [2018-12-09 12:27:18,473 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/data/ce34e1f1d/259df874989f48bcb35da57eaa362a4c [2018-12-09 12:27:18,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:27:18,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:27:18,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:27:18,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:27:18,478 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:27:18,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18, skipping insertion in model container [2018-12-09 12:27:18,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:27:18,492 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:27:18,571 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:27:18,573 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:27:18,581 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:27:18,589 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:27:18,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18 WrapperNode [2018-12-09 12:27:18,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:27:18,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:27:18,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:27:18,590 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:27:18,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:27:18,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:27:18,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:27:18,608 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:27:18,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... [2018-12-09 12:27:18,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:27:18,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:27:18,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:27:18,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:27:18,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:27:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:27:18,755 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:27:18,756 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-09 12:27:18,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:27:18 BoogieIcfgContainer [2018-12-09 12:27:18,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:27:18,756 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 12:27:18,756 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 12:27:18,759 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 12:27:18,759 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:27:18,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 12:27:18" (1/3) ... [2018-12-09 12:27:18,760 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78915423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:27:18, skipping insertion in model container [2018-12-09 12:27:18,760 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:27:18,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:27:18" (2/3) ... [2018-12-09 12:27:18,760 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78915423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:27:18, skipping insertion in model container [2018-12-09 12:27:18,760 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:27:18,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:27:18" (3/3) ... [2018-12-09 12:27:18,761 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-12-09 12:27:18,795 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 12:27:18,795 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 12:27:18,795 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 12:27:18,795 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 12:27:18,795 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:27:18,795 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:27:18,795 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 12:27:18,796 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:27:18,796 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 12:27:18,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 12:27:18,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:18,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:27:18,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:27:18,820 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 12:27:18,820 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 12:27:18,821 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 12:27:18,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 12:27:18,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:18,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:27:18,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:27:18,821 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 12:27:18,822 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 12:27:18,826 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~M~0 > 0; 7#L19-2true [2018-12-09 12:27:18,826 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 7#L19-2true [2018-12-09 12:27:18,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-09 12:27:18,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:18,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:18,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:18,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-12-09 12:27:18,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:18,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:18,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:18,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:18,895 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-12-09 12:27:18,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:18,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:18,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:18,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:18,947 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:18,947 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:18,947 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:18,948 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:18,948 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:27:18,948 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:18,948 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:18,948 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:18,948 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-09 12:27:18,948 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:18,948 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:18,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:18,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:18,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:18,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:18,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:18,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,027 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:19,028 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,031 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:19,031 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:19,036 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:27:19,036 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:19,051 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,068 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:27:19,068 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:19,140 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:27:19,141 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:19,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:19,141 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:19,141 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:19,142 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:27:19,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:19,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:19,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-09 12:27:19,142 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:19,142 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:19,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,208 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:19,211 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:27:19,212 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:19,213 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:19,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:19,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:27:19,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:19,216 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 12:27:19,217 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 12:27:19,222 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:27:19,222 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:19,222 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:19,223 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:19,223 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:27:19,223 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:19,224 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 12:27:19,225 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 12:27:19,242 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:27:19,252 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 12:27:19,252 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 12:27:19,253 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:27:19,255 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-12-09 12:27:19,255 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:27:19,256 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2018-12-09 12:27:19,258 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-09 12:27:19,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:19,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:19,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:19,333 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 12:27:19,334 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-09 12:27:19,391 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-12-09 12:27:19,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 12:27:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 12:27:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-09 12:27:19,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-09 12:27:19,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:19,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 12:27:19,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:19,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-09 12:27:19,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:19,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-09 12:27:19,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:19,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-09 12:27:19,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 12:27:19,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 12:27:19,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-09 12:27:19,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:27:19,401 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 12:27:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-09 12:27:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-09 12:27:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-09 12:27:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-09 12:27:19,416 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 12:27:19,417 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 12:27:19,417 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 12:27:19,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-09 12:27:19,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:19,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:27:19,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:27:19,417 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 12:27:19,417 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 12:27:19,418 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L17 assume main_~M~0 > 0; 88#L19-2 assume !!(main_~x~0 != main_~M~0); 87#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 83#L19-2 [2018-12-09 12:27:19,418 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~x~0 != main_~M~0); 84#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 83#L19-2 [2018-12-09 12:27:19,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,418 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-12-09 12:27:19,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-12-09 12:27:19,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,427 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-12-09 12:27:19,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:27:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:19,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:27:19,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 12:27:19,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:19,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:19,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 12:27:19,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-09 12:27:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:27:19,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:27:19,513 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-09 12:27:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:27:19,528 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2018-12-09 12:27:19,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 12:27:19,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2018-12-09 12:27:19,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:19,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2018-12-09 12:27:19,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-09 12:27:19,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 12:27:19,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-12-09 12:27:19,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:27:19,529 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-12-09 12:27:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-12-09 12:27:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-09 12:27:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-09 12:27:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-09 12:27:19,530 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-09 12:27:19,530 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-09 12:27:19,530 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 12:27:19,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-12-09 12:27:19,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:19,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:27:19,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:27:19,531 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-09 12:27:19,531 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 12:27:19,531 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 124#L17 assume main_~M~0 > 0; 125#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2018-12-09 12:27:19,531 INFO L796 eck$LassoCheckResult]: Loop: 127#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 126#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2018-12-09 12:27:19,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,531 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-12-09 12:27:19,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2018-12-09 12:27:19,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:19,538 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2018-12-09 12:27:19,538 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:19,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:19,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:27:19,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:19,551 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:19,551 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:19,551 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:19,551 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:19,551 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:27:19,551 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,552 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:19,552 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:19,552 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 12:27:19,552 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:19,552 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:19,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:19,614 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:19,614 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,615 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:19,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:19,631 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:27:19,631 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_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,633 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:19,633 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:19,647 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:27:19,648 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_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:19,650 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:19,668 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:27:19,668 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:21,011 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:27:21,012 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:21,012 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:21,012 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:21,012 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:21,012 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:27:21,012 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:21,013 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:21,013 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:21,013 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 12:27:21,013 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:21,013 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:21,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,070 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:21,071 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:27:21,071 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:21,071 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:21,071 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:21,072 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:27:21,072 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:21,073 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 12:27:21,073 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 12:27:21,075 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:27:21,075 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:21,076 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:21,076 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:21,076 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:27:21,076 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:21,077 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 12:27:21,077 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 12:27:21,079 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:27:21,080 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:21,080 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:21,080 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:27:21,081 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:21,081 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 12:27:21,081 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:21,081 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-09 12:27:21,082 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:27:21,085 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:27:21,088 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 12:27:21,088 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 12:27:21,088 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:27:21,089 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 12:27:21,089 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:27:21,089 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~M~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~M~0 + 1 Supporting invariants [] [2018-12-09 12:27:21,089 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 12:27:21,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:21,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:21,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:21,119 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 12:27:21,119 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-09 12:27:21,125 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2018-12-09 12:27:21,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 12:27:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 12:27:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-09 12:27:21,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-09 12:27:21,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:21,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 12:27:21,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:21,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-12-09 12:27:21,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:21,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-12-09 12:27:21,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:21,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2018-12-09 12:27:21,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 12:27:21,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 12:27:21,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-12-09 12:27:21,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:27:21,128 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-12-09 12:27:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-12-09 12:27:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-09 12:27:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-09 12:27:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-12-09 12:27:21,129 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-09 12:27:21,129 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-09 12:27:21,129 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 12:27:21,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-12-09 12:27:21,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-09 12:27:21,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:27:21,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:27:21,129 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-09 12:27:21,129 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-09 12:27:21,130 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L17 assume main_~M~0 > 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 182#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2018-12-09 12:27:21,130 INFO L796 eck$LassoCheckResult]: Loop: 183#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 184#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2018-12-09 12:27:21,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:21,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-12-09 12:27:21,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:21,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:21,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:27:21,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-12-09 12:27:21,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:21,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:21,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:27:21,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2018-12-09 12:27:21,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:27:21,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:27:21,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:27:21,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:27:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:27:21,151 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:21,151 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:21,151 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:21,151 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:21,151 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:27:21,151 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:21,152 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:21,152 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:21,152 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 12:27:21,152 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:21,152 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:21,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:21,216 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:21,216 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:21,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:21,217 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:21,232 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:27:21,232 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_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:21,235 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:27:21,235 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34fa9083-a43c-497f-959c-bbc41e32000b/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:21,253 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:27:21,253 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:27:22,896 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:27:22,898 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:27:22,898 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:27:22,898 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:27:22,898 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:27:22,899 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:27:22,899 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:27:22,899 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:27:22,899 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:27:22,899 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 12:27:22,899 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:27:22,899 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:27:22,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:22,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:22,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:27:22,954 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:27:22,954 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:27:22,954 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:27:22,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:27:22,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:27:22,955 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:27:22,955 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-09 12:27:22,955 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:27:22,956 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-09 12:27:22,956 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:27:22,960 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:27:22,961 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 12:27:22,961 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 12:27:22,962 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:27:22,962 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 12:27:22,962 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:27:22,962 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~M~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-09 12:27:22,962 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 12:27:22,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:22,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:22,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:22,991 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 12:27:22,991 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-09 12:27:22,994 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2018-12-09 12:27:22,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-09 12:27:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 12:27:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2018-12-09 12:27:22,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 12:27:22,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:22,995 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 12:27:23,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:23,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:23,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:23,019 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 12:27:23,020 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-09 12:27:23,022 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2018-12-09 12:27:23,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-09 12:27:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 12:27:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2018-12-09 12:27:23,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 12:27:23,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:23,023 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 12:27:23,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:27:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:23,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:27:23,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:27:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:27:23,043 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 12:27:23,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-09 12:27:23,049 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2018-12-09 12:27:23,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 12:27:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 12:27:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-09 12:27:23,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-09 12:27:23,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:23,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-09 12:27:23,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:23,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-09 12:27:23,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:27:23,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-12-09 12:27:23,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 12:27:23,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2018-12-09 12:27:23,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 12:27:23,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 12:27:23,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 12:27:23,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 12:27:23,052 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:27:23,052 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:27:23,052 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:27:23,052 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 12:27:23,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 12:27:23,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 12:27:23,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 12:27:23,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 12:27:23 BoogieIcfgContainer [2018-12-09 12:27:23,057 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 12:27:23,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:27:23,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:27:23,057 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:27:23,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:27:18" (3/4) ... [2018-12-09 12:27:23,060 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 12:27:23,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:27:23,060 INFO L168 Benchmark]: Toolchain (without parser) took 4585.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 954.4 MB in the beginning and 856.3 MB in the end (delta: 98.0 MB). Peak memory consumption was 196.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:27:23,061 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:27:23,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.60 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:27:23,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:27:23,063 INFO L168 Benchmark]: Boogie Preprocessor took 10.45 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:27:23,063 INFO L168 Benchmark]: RCFGBuilder took 137.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -146.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 12:27:23,063 INFO L168 Benchmark]: BuchiAutomizer took 4300.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 230.6 MB). Peak memory consumption was 230.6 MB. Max. memory is 11.5 GB. [2018-12-09 12:27:23,064 INFO L168 Benchmark]: Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 856.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:27:23,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.60 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.45 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 940.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -146.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4300.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 856.3 MB in the end (delta: 230.6 MB). Peak memory consumption was 230.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 856.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * M + x and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 2 * M + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * M + -2 * x + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax196 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...