./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 3df7720ba3b76dcfdecddff77e2f89a40d99e447 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:11:11,264 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:11:11,266 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:11:11,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:11:11,275 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:11:11,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:11:11,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:11:11,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:11:11,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:11:11,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:11:11,280 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:11:11,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:11:11,281 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:11:11,282 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:11:11,283 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:11:11,284 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:11:11,284 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:11:11,286 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:11:11,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:11:11,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:11:11,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:11:11,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:11:11,292 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:11:11,292 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:11:11,293 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:11:11,293 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:11:11,294 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:11:11,295 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:11:11,296 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:11:11,297 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:11:11,297 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:11:11,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:11:11,297 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:11:11,298 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:11:11,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:11:11,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:11:11,300 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:11:11,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:11:11,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:11:11,312 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:11:11,312 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:11:11,312 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:11:11,312 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:11:11,312 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:11:11,312 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:11:11,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:11:11,313 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:11:11,314 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:11:11,314 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:11:11,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:11:11,315 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:11:11,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:11:11,317 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:11:11,317 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:11:11,318 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:11:11,318 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_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2018-10-27 06:11:11,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:11:11,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:11:11,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:11:11,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:11:11,356 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:11:11,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-10-27 06:11:11,399 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/data/0d36112c8/cdc7ebab9ae74a11b49e29bf9e558bc2/FLAG73cd2d10b [2018-10-27 06:11:11,745 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:11:11,746 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/sv-benchmarks/c/termination-crafted/RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-10-27 06:11:11,751 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/data/0d36112c8/cdc7ebab9ae74a11b49e29bf9e558bc2/FLAG73cd2d10b [2018-10-27 06:11:11,761 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/data/0d36112c8/cdc7ebab9ae74a11b49e29bf9e558bc2 [2018-10-27 06:11:11,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:11:11,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:11:11,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:11,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:11:11,771 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:11:11,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112770f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11, skipping insertion in model container [2018-10-27 06:11:11,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:11:11,796 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:11:11,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:11,904 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:11:11,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:11,925 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:11:11,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11 WrapperNode [2018-10-27 06:11:11,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:11,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:11,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:11:11,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:11:11,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:11,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:11:11,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:11:11,953 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:11:11,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... [2018-10-27 06:11:11,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:11:11,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:11:11,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:11:11,966 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:11:11,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-10-27 06:11:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-10-27 06:11:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:11:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:11:12,358 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:11:12,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:12 BoogieIcfgContainer [2018-10-27 06:11:12,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:11:12,359 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:11:12,359 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:11:12,363 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:11:12,364 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:12,364 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:11:11" (1/3) ... [2018-10-27 06:11:12,365 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7a8ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:12, skipping insertion in model container [2018-10-27 06:11:12,365 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:12,365 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:11" (2/3) ... [2018-10-27 06:11:12,365 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f7a8ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:12, skipping insertion in model container [2018-10-27 06:11:12,366 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:12,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:12" (3/3) ... [2018-10-27 06:11:12,367 INFO L375 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication_true-termination_true-valid-memsafety.c [2018-10-27 06:11:12,416 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:11:12,417 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:11:12,417 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:11:12,417 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:11:12,417 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:11:12,417 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:11:12,417 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:11:12,417 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:11:12,417 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:11:12,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-10-27 06:11:12,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:12,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:12,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:12,460 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:12,460 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:11:12,460 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:11:12,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-10-27 06:11:12,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:12,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:12,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:12,462 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:12,462 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:11:12,470 INFO L793 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 8#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2018-10-27 06:11:12,470 INFO L795 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 11#L13true assume ~m < 0; 9#L14true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2018-10-27 06:11:12,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:12,483 INFO L82 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2018-10-27 06:11:12,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:12,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:12,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:12,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash 29916, now seen corresponding path program 1 times [2018-10-27 06:11:12,573 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:12,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:12,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:12,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1236460223, now seen corresponding path program 1 times [2018-10-27 06:11:12,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:12,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:12,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:12,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:12,812 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:12,813 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:12,813 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:12,813 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:12,813 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:12,814 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:12,814 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:12,814 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:12,814 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:11:12,814 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:12,814 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:12,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:12,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,079 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:13,080 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,084 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,084 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,089 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,090 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,107 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,110 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,110 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,126 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,126 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,129 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,129 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,145 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,146 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,159 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,159 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,179 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,181 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,181 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,197 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,200 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:13,200 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:13,217 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:13,238 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:13,238 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:13,260 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:13,261 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:13,261 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:13,261 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:13,261 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:13,261 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:13,262 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:13,262 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:13,262 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:13,262 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:11:13,262 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:13,262 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:13,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:13,541 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:13,545 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:13,546 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 [2018-10-27 06:11:13,548 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,549 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,549 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,549 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,549 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,552 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,552 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,556 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,556 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 [2018-10-27 06:11:13,557 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,557 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,558 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,558 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,558 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,559 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,559 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,560 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,561 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 [2018-10-27 06:11:13,561 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,561 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,562 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,562 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,562 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,562 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,562 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,566 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,567 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 [2018-10-27 06:11:13,567 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,567 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,567 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,568 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,569 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,570 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,570 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,571 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,571 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 [2018-10-27 06:11:13,572 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,572 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,572 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,572 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,572 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,573 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,573 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,574 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,574 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 [2018-10-27 06:11:13,575 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,575 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,575 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,578 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,578 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,579 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,579 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,580 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:13,581 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 [2018-10-27 06:11:13,581 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:13,581 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:13,582 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:13,582 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:13,582 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:13,582 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:13,583 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:13,589 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:13,592 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-10-27 06:11:13,592 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:11:13,594 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:13,594 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:13,594 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:13,595 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2018-10-27 06:11:13,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:13,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:13,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:13,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:13,864 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 [2018-10-27 06:11:13,865 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 4 states. [2018-10-27 06:11:14,058 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 4 states. Result 47 states and 60 transitions. Complement of second has 12 states. [2018-10-27 06:11:14,058 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 [2018-10-27 06:11:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-10-27 06:11:14,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:11:14,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:14,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:11:14,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:14,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2018-10-27 06:11:14,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:14,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 60 transitions. [2018-10-27 06:11:14,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:14,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 22 states and 25 transitions. [2018-10-27 06:11:14,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-10-27 06:11:14,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-10-27 06:11:14,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-10-27 06:11:14,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:14,078 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-10-27 06:11:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-10-27 06:11:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2018-10-27 06:11:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-27 06:11:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-10-27 06:11:14,105 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:11:14,105 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:11:14,105 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:11:14,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-10-27 06:11:14,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:14,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:14,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:14,106 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:14,106 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:14,107 INFO L793 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 124#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 132#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 127#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 126#multENTRY ~n := #in~n;~m := #in~m; 129#L13 assume !(~m < 0); 133#L16 [2018-10-27 06:11:14,107 INFO L795 eck$LassoCheckResult]: Loop: 133#L16 assume !(~m == 0); 135#L19 call #t~ret1 := mult(~n, ~m - 1);< 137#multENTRY ~n := #in~n;~m := #in~m; 138#L13 assume !(~m < 0); 133#L16 [2018-10-27 06:11:14,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1761229506, now seen corresponding path program 1 times [2018-10-27 06:11:14,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:14,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:14,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:14,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:14,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1254111, now seen corresponding path program 1 times [2018-10-27 06:11:14,119 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:14,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:14,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:14,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1744825056, now seen corresponding path program 1 times [2018-10-27 06:11:14,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:14,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:14,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:14,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:14,256 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:11:14,367 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:11:14,501 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:14,501 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:14,501 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:14,502 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:14,502 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:14,502 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:14,502 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:14,502 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:14,502 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:11:14,502 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:14,502 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:14,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:14,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:14,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:14,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:14,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:14,599 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:14,599 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:14,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:14,602 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:14,605 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:14,605 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:14,622 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:14,622 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:14,624 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:14,624 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:14,642 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:14,642 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:14,644 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:14,644 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:14,661 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:14,661 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:14,665 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:14,665 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0, mult_#in~n=0} Honda state: {mult_~n=0, mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:14,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:14,683 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:14,705 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:14,705 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:15,778 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:15,779 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:15,780 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:15,780 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:15,780 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:15,780 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:15,780 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:15,780 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:15,780 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:15,780 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:11:15,780 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:15,780 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:15,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:15,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:15,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:15,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:15,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:15,866 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:15,866 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:15,866 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 [2018-10-27 06:11:15,867 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:15,867 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:15,867 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:15,867 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:15,867 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:15,868 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:15,868 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:15,873 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:15,876 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:11:15,876 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:15,877 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:15,877 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:15,877 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:15,877 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2018-10-27 06:11:15,877 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:15,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:15,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:15,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:16,006 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 [2018-10-27 06:11:16,006 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-10-27 06:11:16,055 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 27 states and 32 transitions. Complement of second has 13 states. [2018-10-27 06:11:16,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:11:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-10-27 06:11:16,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:11:16,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:16,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2018-10-27 06:11:16,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:16,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2018-10-27 06:11:16,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:16,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-10-27 06:11:16,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:16,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 31 transitions. [2018-10-27 06:11:16,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-10-27 06:11:16,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-10-27 06:11:16,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 31 transitions. [2018-10-27 06:11:16,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:16,061 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-10-27 06:11:16,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 31 transitions. [2018-10-27 06:11:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-10-27 06:11:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 06:11:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-10-27 06:11:16,063 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-10-27 06:11:16,063 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-10-27 06:11:16,063 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:11:16,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-10-27 06:11:16,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:16,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:16,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:16,065 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:16,065 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:11:16,065 INFO L793 eck$LassoCheckResult]: Stem: 246#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 233#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 241#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 243#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 247#multENTRY ~n := #in~n;~m := #in~m; 240#L13 assume !(~m < 0); 242#L16 assume !(~m == 0); 235#L19 call #t~ret1 := mult(~n, ~m - 1);< 234#multENTRY ~n := #in~n;~m := #in~m; 236#L13 assume ~m < 0; 248#L14 [2018-10-27 06:11:16,065 INFO L795 eck$LassoCheckResult]: Loop: 248#L14 call #t~ret0 := mult(~n, -~m);< 250#multENTRY ~n := #in~n;~m := #in~m; 253#L13 assume ~m < 0; 248#L14 [2018-10-27 06:11:16,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:16,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1744825059, now seen corresponding path program 1 times [2018-10-27 06:11:16,066 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:16,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:16,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:16,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:16,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:16,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:16,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:11:16,173 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:11:16,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:16,173 INFO L82 PathProgramCache]: Analyzing trace with hash 60546, now seen corresponding path program 2 times [2018-10-27 06:11:16,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:16,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:16,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:16,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:16,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:16,277 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:16,277 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:16,277 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:16,277 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:16,277 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:16,277 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:16,278 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:16,278 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:16,278 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:11:16,278 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:16,278 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:16,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:16,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:16,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:16,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:16,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:16,355 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:16,355 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:16,358 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:16,358 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97c0fa26-5000-4e3f-ae2e-82e92fdceb9d/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 [2018-10-27 06:11:16,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:16,378 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:17,163 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:17,165 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:17,165 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:17,165 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:17,165 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:17,165 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:17,165 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:17,165 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:17,165 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:17,166 INFO L131 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:11:17,166 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:17,166 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:17,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:17,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:17,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:17,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:17,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:17,215 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:17,215 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:17,215 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 [2018-10-27 06:11:17,216 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:17,216 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:17,216 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:17,216 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:17,216 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:17,217 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:17,217 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:17,224 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:17,228 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-10-27 06:11:17,228 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:11:17,228 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:17,228 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:17,228 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:17,229 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2018-10-27 06:11:17,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:17,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:17,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:17,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:17,295 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 [2018-10-27 06:11:17,295 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-10-27 06:11:17,331 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 52 states and 62 transitions. Complement of second has 9 states. [2018-10-27 06:11:17,334 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 [2018-10-27 06:11:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-10-27 06:11:17,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 3 letters. [2018-10-27 06:11:17,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:17,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 14 letters. Loop has 3 letters. [2018-10-27 06:11:17,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:17,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 6 letters. [2018-10-27 06:11:17,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:17,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 62 transitions. [2018-10-27 06:11:17,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:17,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 45 states and 55 transitions. [2018-10-27 06:11:17,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-10-27 06:11:17,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-10-27 06:11:17,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 55 transitions. [2018-10-27 06:11:17,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:17,345 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-10-27 06:11:17,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 55 transitions. [2018-10-27 06:11:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-10-27 06:11:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-27 06:11:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-10-27 06:11:17,348 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-10-27 06:11:17,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:11:17,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 06:11:17,351 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 5 states. [2018-10-27 06:11:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:17,397 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-27 06:11:17,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:11:17,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 36 transitions. [2018-10-27 06:11:17,400 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:17,400 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-10-27 06:11:17,400 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:11:17,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:11:17,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:11:17,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:17,400 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:17,400 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:17,400 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:17,400 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:11:17,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:11:17,401 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:17,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:11:17,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:11:17 BoogieIcfgContainer [2018-10-27 06:11:17,408 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:11:17,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:11:17,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:11:17,408 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:11:17,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:12" (3/4) ... [2018-10-27 06:11:17,413 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:11:17,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:11:17,414 INFO L168 Benchmark]: Toolchain (without parser) took 5650.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 962.3 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:17,414 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:17,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.06 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:17,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.14 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:17,417 INFO L168 Benchmark]: Boogie Preprocessor took 13.15 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:17,417 INFO L168 Benchmark]: RCFGBuilder took 392.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:17,418 INFO L168 Benchmark]: BuchiAutomizer took 5048.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:17,418 INFO L168 Benchmark]: Witness Printer took 5.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:17,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.06 ms. Allocated memory is still 1.0 GB. Free memory was 962.3 MB in the beginning and 951.6 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 26.14 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.15 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 392.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5048.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 4.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 46 SDtfs, 50 SDslu, 15 SDs, 0 SdLazy, 70 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf92 smp100 dnf100 smp100 tf110 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...