./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_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_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/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 4113f10404cd50c48db8fb998633f502f8a0b01a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 16:06:32,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 16:06:32,953 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 16:06:32,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 16:06:32,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 16:06:32,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 16:06:32,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 16:06:32,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 16:06:32,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 16:06:32,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 16:06:32,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 16:06:32,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 16:06:32,964 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 16:06:32,965 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 16:06:32,966 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 16:06:32,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 16:06:32,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 16:06:32,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 16:06:32,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 16:06:32,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 16:06:32,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 16:06:32,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 16:06:32,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 16:06:32,972 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 16:06:32,972 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 16:06:32,973 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 16:06:32,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 16:06:32,974 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 16:06:32,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 16:06:32,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 16:06:32,975 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 16:06:32,975 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 16:06:32,975 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 16:06:32,975 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 16:06:32,976 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 16:06:32,976 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 16:06:32,976 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 16:06:32,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 16:06:32,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 16:06:32,985 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 16:06:32,986 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 16:06:32,986 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 16:06:32,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 16:06:32,987 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 16:06:32,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 16:06:32,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 16:06:32,988 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 16:06:32,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 16:06:32,988 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 16:06:32,988 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 16:06:32,989 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 16:06:32,989 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_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/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 -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2018-12-01 16:06:33,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 16:06:33,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 16:06:33,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 16:06:33,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 16:06:33,016 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 16:06:33,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-12-01 16:06:33,050 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/data/d1c8f3dae/241e58b4c4954239bb87eea2766695ce/FLAGce0b6b3ca [2018-12-01 16:06:33,387 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 16:06:33,387 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-12-01 16:06:33,392 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/data/d1c8f3dae/241e58b4c4954239bb87eea2766695ce/FLAGce0b6b3ca [2018-12-01 16:06:33,788 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/data/d1c8f3dae/241e58b4c4954239bb87eea2766695ce [2018-12-01 16:06:33,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 16:06:33,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 16:06:33,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 16:06:33,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 16:06:33,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 16:06:33,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489644d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33, skipping insertion in model container [2018-12-01 16:06:33,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 16:06:33,825 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 16:06:33,910 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:06:33,912 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 16:06:33,921 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:06:33,929 INFO L195 MainTranslator]: Completed translation [2018-12-01 16:06:33,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33 WrapperNode [2018-12-01 16:06:33,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 16:06:33,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 16:06:33,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 16:06:33,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 16:06:33,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 16:06:33,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 16:06:33,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 16:06:33,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 16:06:33,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... [2018-12-01 16:06:33,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 16:06:33,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 16:06:33,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 16:06:33,966 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 16:06:33,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 16:06:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 16:06:34,101 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 16:06:34,101 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 16:06:34,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:34 BoogieIcfgContainer [2018-12-01 16:06:34,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 16:06:34,102 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 16:06:34,102 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 16:06:34,104 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 16:06:34,105 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:06:34,105 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 04:06:33" (1/3) ... [2018-12-01 16:06:34,106 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f05c212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 04:06:34, skipping insertion in model container [2018-12-01 16:06:34,106 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:06:34,106 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:33" (2/3) ... [2018-12-01 16:06:34,106 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f05c212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 04:06:34, skipping insertion in model container [2018-12-01 16:06:34,106 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 16:06:34,106 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:34" (3/3) ... [2018-12-01 16:06:34,107 INFO L375 chiAutomizerObserver]: Analyzing ICFG DivMinus2_true-termination_true-no-overflow.c [2018-12-01 16:06:34,141 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 16:06:34,141 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 16:06:34,141 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 16:06:34,141 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 16:06:34,141 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 16:06:34,141 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 16:06:34,142 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 16:06:34,142 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 16:06:34,142 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 16:06:34,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-12-01 16:06:34,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-01 16:06:34,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:34,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:34,166 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 16:06:34,166 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 16:06:34,166 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 16:06:34,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-12-01 16:06:34,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-01 16:06:34,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:34,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:34,167 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 16:06:34,167 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 16:06:34,172 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 7#L14-2true [2018-12-01 16:06:34,172 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 3#L17-2true assume !(0 != main_~ytmp~0); 11#L16-2true main_~res~0 := 1 + main_~res~0; 7#L14-2true [2018-12-01 16:06:34,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-01 16:06:34,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 39957, now seen corresponding path program 1 times [2018-12-01 16:06:34,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:34,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:06:34,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:06:34,269 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-01 16:06:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:06:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:06:34,279 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2018-12-01 16:06:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:06:34,294 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-12-01 16:06:34,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:06:34,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-12-01 16:06:34,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-01 16:06:34,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 9 transitions. [2018-12-01 16:06:34,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 16:06:34,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 16:06:34,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2018-12-01 16:06:34,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 16:06:34,299 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-01 16:06:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2018-12-01 16:06:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-01 16:06:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-01 16:06:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-01 16:06:34,316 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-01 16:06:34,316 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-01 16:06:34,316 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 16:06:34,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-12-01 16:06:34,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-01 16:06:34,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:34,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:34,317 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 16:06:34,317 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-01 16:06:34,317 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 32#L14-2 [2018-12-01 16:06:34,317 INFO L796 eck$LassoCheckResult]: Loop: 32#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 29#L17-2 assume !!(0 != main_~ytmp~0); 30#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 33#L17-2 assume !(0 != main_~ytmp~0); 34#L16-2 main_~res~0 := 1 + main_~res~0; 32#L14-2 [2018-12-01 16:06:34,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-12-01 16:06:34,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,322 INFO L82 PathProgramCache]: Analyzing trace with hash 38452088, now seen corresponding path program 1 times [2018-12-01 16:06:34,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:06:34,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash 925955769, now seen corresponding path program 1 times [2018-12-01 16:06:34,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,391 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:34,391 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:34,391 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:34,392 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:34,392 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:06:34,392 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,392 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:34,392 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:34,392 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 16:06:34,392 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:34,392 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:34,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,492 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:34,493 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,496 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:34,496 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:34,525 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:34,525 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,527 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:34,527 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:34,552 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:34,552 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,554 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:34,555 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:34,575 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:34,586 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:34,586 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=7}, {ULTIMATE.start_main_~res~0=-7}, {ULTIMATE.start_main_~res~0=1}] Lambdas: [2, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:34,603 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,620 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:34,620 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:34,761 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:06:34,763 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:34,763 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:34,763 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:34,763 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:34,763 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:06:34,763 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,763 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:34,763 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:34,763 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 16:06:34,763 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:34,763 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:34,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,820 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:34,823 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:06:34,824 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:34,825 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:34,825 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:34,825 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:34,825 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:34,828 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:06:34,828 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:06:34,834 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:34,834 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:34,835 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:34,835 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:34,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:34,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:34,837 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:06:34,837 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:06:34,843 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:34,843 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:34,844 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:34,844 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:06:34,844 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:34,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:34,845 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:34,845 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:06:34,845 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:06:34,852 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:06:34,859 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:06:34,859 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-01 16:06:34,861 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:06:34,861 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:06:34,861 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:06:34,861 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-01 16:06:34,862 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:06:34,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:34,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:34,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:34,910 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 16:06:34,911 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-12-01 16:06:34,933 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 24 states and 33 transitions. Complement of second has 7 states. [2018-12-01 16:06:34,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 16:06:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-12-01 16:06:34,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2018-12-01 16:06:34,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:34,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2018-12-01 16:06:34,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:34,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2018-12-01 16:06:34,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:34,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2018-12-01 16:06:34,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-01 16:06:34,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 18 states and 25 transitions. [2018-12-01 16:06:34,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-01 16:06:34,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-12-01 16:06:34,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2018-12-01 16:06:34,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:06:34,939 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-12-01 16:06:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2018-12-01 16:06:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-01 16:06:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-01 16:06:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2018-12-01 16:06:34,941 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2018-12-01 16:06:34,941 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2018-12-01 16:06:34,941 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 16:06:34,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2018-12-01 16:06:34,942 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-01 16:06:34,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:34,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:34,942 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-01 16:06:34,942 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:06:34,942 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 108#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 105#L17-2 assume !!(0 != main_~ytmp~0); 106#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 110#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2018-12-01 16:06:34,942 INFO L796 eck$LassoCheckResult]: Loop: 104#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 103#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2018-12-01 16:06:34,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash 29869542, now seen corresponding path program 1 times [2018-12-01 16:06:34,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 1 times [2018-12-01 16:06:34,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:34,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140509, now seen corresponding path program 2 times [2018-12-01 16:06:34,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:34,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:34,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:34,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:34,985 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:34,986 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:34,986 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:34,986 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:34,986 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:06:34,986 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:34,986 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:34,986 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:34,986 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 16:06:34,986 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:34,986 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:34,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:34,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,033 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,033 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,058 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:35,059 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_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,076 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:35,076 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_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,079 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,079 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,096 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:35,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,144 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:06:35,145 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:35,145 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:35,145 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:35,145 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:35,145 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:06:35,145 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,145 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:35,145 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:35,145 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 16:06:35,145 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:35,146 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:35,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,191 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,191 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:06:35,191 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,192 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,192 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,192 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,192 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,194 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:06:35,194 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:06:35,196 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:35,197 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,197 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,197 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:06:35,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,198 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,198 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,198 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:06:35,198 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:06:35,202 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:06:35,204 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:06:35,205 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:06:35,205 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:06:35,205 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:06:35,205 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:06:35,205 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-12-01 16:06:35,206 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:06:35,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,244 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:06:35,244 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-12-01 16:06:35,253 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 45 transitions. Complement of second has 5 states. [2018-12-01 16:06:35,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:06:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-01 16:06:35,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-01 16:06:35,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-01 16:06:35,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-01 16:06:35,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2018-12-01 16:06:35,257 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-01 16:06:35,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 40 transitions. [2018-12-01 16:06:35,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-01 16:06:35,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-12-01 16:06:35,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 40 transitions. [2018-12-01 16:06:35,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:06:35,259 INFO L705 BuchiCegarLoop]: Abstraction has 29 states and 40 transitions. [2018-12-01 16:06:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 40 transitions. [2018-12-01 16:06:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-12-01 16:06:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 16:06:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2018-12-01 16:06:35,261 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-12-01 16:06:35,261 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2018-12-01 16:06:35,261 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 16:06:35,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2018-12-01 16:06:35,262 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-01 16:06:35,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:35,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:35,263 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-01 16:06:35,263 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:06:35,263 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 200#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 204#L17-2 assume !!(0 != main_~ytmp~0); 215#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 214#L17-2 assume !!(0 != main_~ytmp~0); 198#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 210#L17-2 [2018-12-01 16:06:35,263 INFO L796 eck$LassoCheckResult]: Loop: 210#L17-2 assume !!(0 != main_~ytmp~0); 211#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 210#L17-2 [2018-12-01 16:06:35,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,263 INFO L82 PathProgramCache]: Analyzing trace with hash 925955826, now seen corresponding path program 1 times [2018-12-01 16:06:35,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:35,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:35,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:06:35,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:06:35,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 16:06:35,294 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 16:06:35,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 2 times [2018-12-01 16:06:35,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:35,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:35,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:06:35,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:35,316 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:35,316 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:35,317 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:35,317 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:35,317 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:06:35,317 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,317 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:35,317 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:35,317 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 16:06:35,317 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:35,317 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:35,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,351 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,351 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,353 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,353 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:35,369 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,385 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:06:35,385 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:35,385 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:35,386 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:35,386 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:35,386 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:06:35,386 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,386 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:35,386 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:35,386 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 16:06:35,386 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:35,386 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:35,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,419 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,419 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:06:35,419 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,420 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,420 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:06:35,420 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,420 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,420 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,420 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:06:35,420 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:06:35,422 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:06:35,423 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:06:35,423 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:06:35,423 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:06:35,423 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:06:35,424 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:06:35,424 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-12-01 16:06:35,424 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:06:35,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,443 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 [2018-12-01 16:06:35,443 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14 Second operand 3 states. [2018-12-01 16:06:35,451 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 32 states and 47 transitions. Complement of second has 5 states. [2018-12-01 16:06:35,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:06:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-01 16:06:35,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-01 16:06:35,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-01 16:06:35,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-01 16:06:35,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 47 transitions. [2018-12-01 16:06:35,454 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-01 16:06:35,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 30 states and 44 transitions. [2018-12-01 16:06:35,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-12-01 16:06:35,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-01 16:06:35,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2018-12-01 16:06:35,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:06:35,455 INFO L705 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-12-01 16:06:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2018-12-01 16:06:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-12-01 16:06:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-01 16:06:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2018-12-01 16:06:35,456 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2018-12-01 16:06:35,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 16:06:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 16:06:35,457 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2018-12-01 16:06:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:06:35,464 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2018-12-01 16:06:35,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 16:06:35,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2018-12-01 16:06:35,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:06:35,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2018-12-01 16:06:35,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-01 16:06:35,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-01 16:06:35,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2018-12-01 16:06:35,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 16:06:35,466 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-12-01 16:06:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2018-12-01 16:06:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-12-01 16:06:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 16:06:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2018-12-01 16:06:35,467 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-01 16:06:35,467 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-01 16:06:35,467 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 16:06:35,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2018-12-01 16:06:35,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-01 16:06:35,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 16:06:35,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 16:06:35,467 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2018-12-01 16:06:35,467 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 16:06:35,468 INFO L794 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 345#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 342#L17-2 assume !!(0 != main_~ytmp~0); 343#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 346#L17-2 assume !(0 != main_~ytmp~0); 349#L16-2 main_~res~0 := 1 + main_~res~0; 347#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 348#L17-2 assume !!(0 != main_~ytmp~0); 351#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 350#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2018-12-01 16:06:35,468 INFO L796 eck$LassoCheckResult]: Loop: 341#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 340#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2018-12-01 16:06:35,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1275475969, now seen corresponding path program 2 times [2018-12-01 16:06:35,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:35,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:06:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:06:35,525 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:06:35,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:06:35,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:06:35,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:06:35,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:06:35,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-12-01 16:06:35,583 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 16:06:35,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 3 times [2018-12-01 16:06:35,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:06:35,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:06:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:06:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:06:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:06:35,596 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:35,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:35,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:35,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:35,596 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 16:06:35,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:35,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:35,596 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 16:06:35,596 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:35,596 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:35,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,638 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,638 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,639 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,639 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,655 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:35,655 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,664 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:35,664 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=1}] Lambdas: [0, 2, 1] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,679 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,679 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,693 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:35,693 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,695 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,696 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,710 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 16:06:35,711 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,714 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 16:06:35,714 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b2d9ed01-1eb2-4fd6-b7ef-8ceb38bdc791/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,730 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 16:06:35,730 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 16:06:35,769 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 16:06:35,770 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 16:06:35,770 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 16:06:35,770 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 16:06:35,770 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 16:06:35,770 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 16:06:35,770 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 16:06:35,770 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 16:06:35,770 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 16:06:35,770 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 16:06:35,770 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 16:06:35,771 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 16:06:35,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 16:06:35,812 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 16:06:35,812 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 16:06:35,812 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,813 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,813 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:06:35,813 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,814 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,814 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,814 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:06:35,814 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:06:35,816 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:35,816 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,816 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,817 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,817 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,817 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,818 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:06:35,818 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:06:35,820 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:35,820 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,821 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,821 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,821 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,821 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,822 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 16:06:35,822 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 16:06:35,824 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 16:06:35,824 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 16:06:35,824 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 16:06:35,824 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 16:06:35,825 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 16:06:35,825 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 16:06:35,825 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 16:06:35,825 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 16:06:35,825 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 16:06:35,827 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 16:06:35,828 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 16:06:35,828 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 16:06:35,829 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 16:06:35,829 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 16:06:35,829 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 16:06:35,829 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-12-01 16:06:35,829 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 16:06:35,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,863 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:06:35,863 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-01 16:06:35,869 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2018-12-01 16:06:35,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:06:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-01 16:06:35,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-01 16:06:35,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,870 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 16:06:35,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,891 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:06:35,891 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-01 16:06:35,899 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 5 states. [2018-12-01 16:06:35,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:06:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-01 16:06:35,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-01 16:06:35,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,900 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 16:06:35,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:06:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:06:35,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:06:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:06:35,924 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 16:06:35,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-01 16:06:35,930 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2018-12-01 16:06:35,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 16:06:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 16:06:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-01 16:06:35,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-01 16:06:35,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2018-12-01 16:06:35,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2018-12-01 16:06:35,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 16:06:35,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2018-12-01 16:06:35,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 16:06:35,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2018-12-01 16:06:35,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 16:06:35,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 16:06:35,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 16:06:35,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 16:06:35,932 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:06:35,932 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:06:35,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 16:06:35,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-12-01 16:06:35,932 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2018-12-01 16:06:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:06:35,933 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 16:06:35,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 16:06:35,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 16:06:35,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 16:06:35,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 16:06:35,933 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 16:06:35,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 16:06:35,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 16:06:35,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 16:06:35,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 04:06:35 BoogieIcfgContainer [2018-12-01 16:06:35,937 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 16:06:35,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 16:06:35,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 16:06:35,938 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 16:06:35,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:34" (3/4) ... [2018-12-01 16:06:35,940 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 16:06:35,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 16:06:35,941 INFO L168 Benchmark]: Toolchain (without parser) took 2148.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.9 MB). Free memory was 961.4 MB in the beginning and 1.2 GB in the end (delta: -215.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:06:35,941 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:06:35,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 16:06:35,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.19 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:06:35,942 INFO L168 Benchmark]: Boogie Preprocessor took 10.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 16:06:35,942 INFO L168 Benchmark]: RCFGBuilder took 135.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-01 16:06:35,943 INFO L168 Benchmark]: BuchiAutomizer took 1835.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-01 16:06:35,943 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:06:35,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.36 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 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 25.19 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 135.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1835.33 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -73.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 49 SDtfs, 44 SDslu, 16 SDs, 0 SdLazy, 60 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq172 hnf94 smp84 dnf100 smp100 tf111 neg97 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...