./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4113f10404cd50c48db8fb998633f502f8a0b01a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 01:02:44,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 01:02:44,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 01:02:44,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 01:02:44,694 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 01:02:44,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 01:02:44,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 01:02:44,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 01:02:44,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 01:02:44,698 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 01:02:44,699 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 01:02:44,699 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 01:02:44,700 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 01:02:44,700 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 01:02:44,701 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 01:02:44,702 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 01:02:44,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 01:02:44,703 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 01:02:44,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 01:02:44,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 01:02:44,706 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 01:02:44,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 01:02:44,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 01:02:44,709 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 01:02:44,709 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 01:02:44,710 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 01:02:44,710 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 01:02:44,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 01:02:44,711 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 01:02:44,712 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 01:02:44,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 01:02:44,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 01:02:44,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 01:02:44,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 01:02:44,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 01:02:44,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 01:02:44,714 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 01:02:44,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 01:02:44,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 01:02:44,723 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 01:02:44,724 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 01:02:44,724 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 01:02:44,725 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 01:02:44,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 01:02:44,726 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 01:02:44,726 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 01:02:44,726 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 01:02:44,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 01:02:44,726 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 01:02:44,726 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 01:02:44,726 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 01:02:44,727 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 01:02:44,727 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 01:02:44,727 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 01:02:44,728 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_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2018-11-10 01:02:44,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 01:02:44,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 01:02:44,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 01:02:44,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 01:02:44,765 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 01:02:44,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-11-10 01:02:44,807 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/data/4b7e858cf/23a2d778f7604a25b6b6b37a85065ad0/FLAG2183e2ac4 [2018-11-10 01:02:45,196 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 01:02:45,196 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/sv-benchmarks/c/termination-restricted-15/DivMinus2_true-termination_true-no-overflow.c [2018-11-10 01:02:45,200 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/data/4b7e858cf/23a2d778f7604a25b6b6b37a85065ad0/FLAG2183e2ac4 [2018-11-10 01:02:45,209 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/data/4b7e858cf/23a2d778f7604a25b6b6b37a85065ad0 [2018-11-10 01:02:45,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 01:02:45,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 01:02:45,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 01:02:45,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 01:02:45,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 01:02:45,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ea8d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45, skipping insertion in model container [2018-11-10 01:02:45,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 01:02:45,235 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 01:02:45,325 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:02:45,327 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 01:02:45,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:02:45,343 INFO L193 MainTranslator]: Completed translation [2018-11-10 01:02:45,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45 WrapperNode [2018-11-10 01:02:45,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 01:02:45,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 01:02:45,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 01:02:45,344 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 01:02:45,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 01:02:45,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 01:02:45,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 01:02:45,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 01:02:45,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... [2018-11-10 01:02:45,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 01:02:45,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 01:02:45,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 01:02:45,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 01:02:45,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:45,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 01:02:45,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 01:02:45,564 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 01:02:45,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:02:45 BoogieIcfgContainer [2018-11-10 01:02:45,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 01:02:45,565 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 01:02:45,565 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 01:02:45,568 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 01:02:45,569 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 01:02:45,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 01:02:45" (1/3) ... [2018-11-10 01:02:45,570 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c7f03c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 01:02:45, skipping insertion in model container [2018-11-10 01:02:45,570 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 01:02:45,570 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:02:45" (2/3) ... [2018-11-10 01:02:45,570 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c7f03c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 01:02:45, skipping insertion in model container [2018-11-10 01:02:45,570 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 01:02:45,571 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:02:45" (3/3) ... [2018-11-10 01:02:45,572 INFO L375 chiAutomizerObserver]: Analyzing ICFG DivMinus2_true-termination_true-no-overflow.c [2018-11-10 01:02:45,619 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 01:02:45,620 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 01:02:45,620 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 01:02:45,620 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 01:02:45,620 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 01:02:45,620 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 01:02:45,621 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 01:02:45,621 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 01:02:45,621 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 01:02:45,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 01:02:45,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 01:02:45,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:45,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:45,657 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 01:02:45,657 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 01:02:45,657 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 01:02:45,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 01:02:45,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 01:02:45,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:45,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:45,659 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 01:02:45,659 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 01:02:45,666 INFO L793 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 8#L14-3true [2018-11-10 01:02:45,666 INFO L795 eck$LassoCheckResult]: Loop: 8#L14-3true assume true; 12#L14-1true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 4#L17-2true assume !true; 13#L16-3true main_~res~0 := main_~res~0 + 1; 8#L14-3true [2018-11-10 01:02:45,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,671 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 01:02:45,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:45,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1114761, now seen corresponding path program 1 times [2018-11-10 01:02:45,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:45,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:45,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 01:02:45,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 01:02:45,771 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 01:02:45,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 01:02:45,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 01:02:45,783 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-10 01:02:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:02:45,789 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-10 01:02:45,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 01:02:45,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-10 01:02:45,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 01:02:45,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 10 transitions. [2018-11-10 01:02:45,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-10 01:02:45,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-10 01:02:45,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-10 01:02:45,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 01:02:45,797 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-10 01:02:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-10 01:02:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-10 01:02:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-10 01:02:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-11-10 01:02:45,815 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-10 01:02:45,815 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-10 01:02:45,815 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 01:02:45,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2018-11-10 01:02:45,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 01:02:45,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:45,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:45,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 01:02:45,816 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 01:02:45,816 INFO L793 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 33#L14-3 [2018-11-10 01:02:45,816 INFO L795 eck$LassoCheckResult]: Loop: 33#L14-3 assume true; 39#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 34#L17-2 assume true; 35#L16-1 assume !(main_~ytmp~0 != 0); 36#L16-3 main_~res~0 := main_~res~0 + 1; 33#L14-3 [2018-11-10 01:02:45,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-10 01:02:45,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:45,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,820 INFO L82 PathProgramCache]: Analyzing trace with hash 34543797, now seen corresponding path program 1 times [2018-11-10 01:02:45,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:45,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:45,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 01:02:45,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 01:02:45,848 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-11-10 01:02:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 01:02:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 01:02:45,848 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-10 01:02:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:02:45,878 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-11-10 01:02:45,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 01:02:45,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-11-10 01:02:45,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-10 01:02:45,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2018-11-10 01:02:45,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 01:02:45,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 01:02:45,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2018-11-10 01:02:45,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 01:02:45,880 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-10 01:02:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2018-11-10 01:02:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-10 01:02:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-10 01:02:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-11-10 01:02:45,881 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-10 01:02:45,881 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-11-10 01:02:45,882 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 01:02:45,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2018-11-10 01:02:45,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-10 01:02:45,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:45,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:45,882 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 01:02:45,882 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-10 01:02:45,882 INFO L793 eck$LassoCheckResult]: Stem: 62#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 60#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L14-3 [2018-11-10 01:02:45,883 INFO L795 eck$LassoCheckResult]: Loop: 61#L14-3 assume true; 63#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 57#L17-2 assume true; 58#L16-1 assume !!(main_~ytmp~0 != 0); 59#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 64#L17-2 assume true; 66#L16-1 assume !(main_~ytmp~0 != 0); 65#L16-3 main_~res~0 := main_~res~0 + 1; 61#L14-3 [2018-11-10 01:02:45,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-11-10 01:02:45,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:45,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1696240080, now seen corresponding path program 1 times [2018-11-10 01:02:45,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:45,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1005678606, now seen corresponding path program 1 times [2018-11-10 01:02:45,896 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:45,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:45,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:45,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:45,970 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:45,971 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:45,971 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:45,971 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:45,971 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 01:02:45,971 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:45,971 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:45,971 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:45,971 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 01:02:45,971 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:45,972 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:45,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:45,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:45,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,079 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:46,079 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,095 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,095 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,115 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:46,115 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,119 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,135 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:46,135 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,138 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,138 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,166 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:46,167 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,380 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 01:02:46,381 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:46,381 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:46,381 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:46,381 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:46,381 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 01:02:46,381 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,381 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:46,381 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:46,381 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 01:02:46,382 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:46,382 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:46,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,431 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:46,434 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 01:02:46,435 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:46,436 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:46,436 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:46,437 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:46,437 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:46,437 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:46,439 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:46,439 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:46,446 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 01:02:46,451 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 01:02:46,451 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-10 01:02:46,453 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 01:02:46,453 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 01:02:46,453 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 01:02:46,454 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 01:02:46,454 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 01:02:46,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:46,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:46,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:46,515 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 [2018-11-10 01:02:46,515 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 5 states. [2018-11-10 01:02:46,541 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand 5 states. Result 33 states and 40 transitions. Complement of second has 7 states. [2018-11-10 01:02:46,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 01:02:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-10 01:02:46,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-10 01:02:46,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-10 01:02:46,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 16 letters. [2018-11-10 01:02:46,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2018-11-10 01:02:46,547 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-10 01:02:46,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 26 states and 31 transitions. [2018-11-10 01:02:46,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-10 01:02:46,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-10 01:02:46,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 31 transitions. [2018-11-10 01:02:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 01:02:46,550 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-10 01:02:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 31 transitions. [2018-11-10 01:02:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-10 01:02:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 01:02:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2018-11-10 01:02:46,553 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-10 01:02:46,553 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-10 01:02:46,553 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 01:02:46,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 30 transitions. [2018-11-10 01:02:46,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-10 01:02:46,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:46,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:46,554 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-10 01:02:46,555 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 01:02:46,555 INFO L793 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 163#L14-3 assume true; 165#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 161#L17-2 assume true; 158#L16-1 assume !!(main_~ytmp~0 != 0); 159#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 168#L17-2 assume true; 156#L16-1 [2018-11-10 01:02:46,555 INFO L795 eck$LassoCheckResult]: Loop: 156#L16-1 assume !!(main_~ytmp~0 != 0); 157#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 160#L17-2 assume true; 156#L16-1 [2018-11-10 01:02:46,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 150908646, now seen corresponding path program 1 times [2018-11-10 01:02:46,555 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:46,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:46,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:46,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,563 INFO L82 PathProgramCache]: Analyzing trace with hash 51724, now seen corresponding path program 1 times [2018-11-10 01:02:46,563 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:46,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:46,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1111263993, now seen corresponding path program 2 times [2018-11-10 01:02:46,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:46,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:46,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:46,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:46,609 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:46,610 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:46,610 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:46,610 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:46,610 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 01:02:46,610 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,610 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:46,610 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:46,610 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 01:02:46,610 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:46,610 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:46,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,665 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:46,666 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,692 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:46,692 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,699 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,717 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:46,717 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,726 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:46,726 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-4}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=3}] Lambdas: [1, 8, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,743 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,743 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,759 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:46,759 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:46,763 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:46,781 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:46,798 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 01:02:46,799 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:46,799 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:46,800 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:46,800 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:46,800 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 01:02:46,800 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:46,800 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:46,800 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:46,800 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 01:02:46,800 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:46,800 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:46,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:46,858 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:46,858 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 01:02:46,858 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:46,859 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:46,859 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:46,859 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:46,860 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:46,862 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 01:02:46,862 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 01:02:46,867 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:46,867 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:46,868 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:46,868 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:46,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:46,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:46,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:46,869 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:46,869 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:46,872 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:46,872 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:46,873 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:46,873 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:46,873 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:46,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:46,875 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 01:02:46,875 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 01:02:46,880 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:46,881 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:46,881 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:46,881 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:46,882 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:46,882 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:46,882 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:46,882 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:46,883 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:46,886 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 01:02:46,888 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 01:02:46,888 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 01:02:46,888 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 01:02:46,888 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 01:02:46,888 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 01:02:46,889 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-10 01:02:46,889 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 01:02:46,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:46,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:46,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:46,927 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 01:02:46,928 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 30 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-10 01:02:46,938 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 30 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 49 states and 59 transitions. Complement of second has 5 states. [2018-11-10 01:02:46,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 01:02:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-10 01:02:46,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-10 01:02:46,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2018-11-10 01:02:46,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-10 01:02:46,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:46,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 59 transitions. [2018-11-10 01:02:46,941 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-10 01:02:46,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 44 states and 54 transitions. [2018-11-10 01:02:46,941 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-10 01:02:46,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-10 01:02:46,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2018-11-10 01:02:46,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 01:02:46,942 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-10 01:02:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2018-11-10 01:02:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-11-10 01:02:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 01:02:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2018-11-10 01:02:46,944 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2018-11-10 01:02:46,944 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2018-11-10 01:02:46,944 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 01:02:46,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2018-11-10 01:02:46,945 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-10 01:02:46,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:46,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:46,945 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-11-10 01:02:46,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 01:02:46,945 INFO L793 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 293#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 294#L14-3 assume true; 296#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 304#L17-2 assume true; 322#L16-1 assume !!(main_~ytmp~0 != 0); 321#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 320#L17-2 assume true; 288#L16-1 assume !!(main_~ytmp~0 != 0); 299#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := main_~ytmp~0 + 1;main_~x~0 := main_~x~0 + 1; 300#L17-2 [2018-11-10 01:02:46,945 INFO L795 eck$LassoCheckResult]: Loop: 300#L17-2 assume true; 308#L16-1 assume !!(main_~ytmp~0 != 0); 309#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 300#L17-2 [2018-11-10 01:02:46,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1005678549, now seen corresponding path program 1 times [2018-11-10 01:02:46,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:46,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:46,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:46,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:46,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 01:02:46,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 01:02:46,997 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 01:02:46,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash 45874, now seen corresponding path program 2 times [2018-11-10 01:02:46,997 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:46,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:46,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:02:46,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,017 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:47,017 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:47,018 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:47,018 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:47,018 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 01:02:47,018 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,018 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:47,018 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:47,018 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 01:02:47,018 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:47,018 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:47,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,062 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:47,062 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,065 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:47,065 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,082 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:47,082 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:47,099 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 01:02:47,100 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:47,100 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:47,100 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:47,100 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:47,100 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 01:02:47,100 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,101 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:47,101 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:47,101 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 01:02:47,101 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:47,101 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:47,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,141 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:47,141 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 01:02:47,142 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:47,142 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:47,142 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:47,142 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:47,142 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:47,142 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:47,143 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:47,143 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:47,145 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 01:02:47,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 01:02:47,146 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 01:02:47,147 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 01:02:47,147 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 01:02:47,147 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 01:02:47,147 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-10 01:02:47,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 01:02:47,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,168 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 01:02:47,168 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-10 01:02:47,194 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2018-11-10 01:02:47,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 01:02:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-10 01:02:47,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2018-11-10 01:02:47,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 13 letters. Loop has 3 letters. [2018-11-10 01:02:47,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-10 01:02:47,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2018-11-10 01:02:47,198 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-10 01:02:47,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 62 transitions. [2018-11-10 01:02:47,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-10 01:02:47,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-10 01:02:47,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 62 transitions. [2018-11-10 01:02:47,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 01:02:47,200 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 62 transitions. [2018-11-10 01:02:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 62 transitions. [2018-11-10 01:02:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-11-10 01:02:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 01:02:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2018-11-10 01:02:47,207 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 59 transitions. [2018-11-10 01:02:47,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 01:02:47,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 01:02:47,207 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 4 states. [2018-11-10 01:02:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:02:47,215 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2018-11-10 01:02:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 01:02:47,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-11-10 01:02:47,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 01:02:47,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 25 states and 29 transitions. [2018-11-10 01:02:47,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-10 01:02:47,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-10 01:02:47,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 29 transitions. [2018-11-10 01:02:47,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 01:02:47,218 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2018-11-10 01:02:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 29 transitions. [2018-11-10 01:02:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-10 01:02:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 01:02:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-10 01:02:47,219 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-10 01:02:47,219 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-10 01:02:47,219 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 01:02:47,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2018-11-10 01:02:47,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 01:02:47,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 01:02:47,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 01:02:47,221 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-10 01:02:47,221 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 01:02:47,221 INFO L793 eck$LassoCheckResult]: Stem: 521#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 512#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 513#L14-3 assume true; 522#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 526#L17-2 assume true; 519#L16-1 assume !!(main_~ytmp~0 != 0); 520#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 525#L17-2 assume true; 532#L16-1 assume !(main_~ytmp~0 != 0); 527#L16-3 main_~res~0 := main_~res~0 + 1; 523#L14-3 assume true; 524#L14-1 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 531#L17-2 assume true; 530#L16-1 assume !!(main_~ytmp~0 != 0); 529#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 528#L17-2 assume true; 515#L16-1 [2018-11-10 01:02:47,221 INFO L795 eck$LassoCheckResult]: Loop: 515#L16-1 assume !!(main_~ytmp~0 != 0); 518#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 514#L17-2 assume true; 515#L16-1 [2018-11-10 01:02:47,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1455875115, now seen corresponding path program 2 times [2018-11-10 01:02:47,221 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:47,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:47,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:47,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,231 INFO L82 PathProgramCache]: Analyzing trace with hash 51724, now seen corresponding path program 3 times [2018-11-10 01:02:47,231 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:47,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:47,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:47,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:02:47,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1395774024, now seen corresponding path program 3 times [2018-11-10 01:02:47,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 01:02:47,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 01:02:47,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 01:02:47,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:02:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 01:02:47,275 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 01:02:47,282 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 01:02:47,288 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 01:02:47,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 01:02:47,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 01:02:47,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 01:02:47,335 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:47,335 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:47,335 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:47,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:47,336 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 01:02:47,336 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,336 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:47,336 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:47,336 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 01:02:47,336 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:47,336 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:47,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,370 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:47,370 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:47,379 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:47,395 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:47,395 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,398 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:47,398 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/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 [2018-11-10 01:02:47,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:47,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:47,440 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:47,440 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=4}, {ULTIMATE.start_main_~x~0=-5}] Lambdas: [6, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,456 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:47,456 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:47,473 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 01:02:47,473 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,485 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 01:02:47,485 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_621a1865-96d7-4e9a-b6da-1a87d39f9860/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,507 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 01:02:47,507 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 01:02:47,525 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 01:02:47,526 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 01:02:47,526 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 01:02:47,527 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 01:02:47,527 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 01:02:47,527 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 01:02:47,527 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 01:02:47,527 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 01:02:47,527 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 01:02:47,527 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 01:02:47,527 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 01:02:47,527 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 01:02:47,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 01:02:47,566 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 01:02:47,567 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 01:02:47,567 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 [2018-11-10 01:02:47,567 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:47,568 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:47,568 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:47,568 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:47,569 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 01:02:47,569 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 01:02:47,572 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:47,573 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:47,573 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:47,573 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:47,573 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:47,573 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:47,573 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:47,574 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:47,574 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:47,576 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:47,576 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:47,576 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:47,577 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:47,577 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:47,577 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:47,578 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 01:02:47,578 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 01:02:47,579 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 01:02:47,580 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 01:02:47,580 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 01:02:47,580 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 01:02:47,580 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 01:02:47,581 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 01:02:47,581 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 01:02:47,581 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 01:02:47,581 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 01:02:47,583 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 01:02:47,584 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 01:02:47,584 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 01:02:47,585 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 01:02:47,585 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 01:02:47,585 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 01:02:47,585 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2018-11-10 01:02:47,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 01:02:47,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,627 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 01:02:47,627 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 01:02:47,642 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 32 states and 36 transitions. Complement of second has 5 states. [2018-11-10 01:02:47,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:47,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 01:02:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-10 01:02:47,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-10 01:02:47,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,643 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 01:02:47,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,667 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 01:02:47,667 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 01:02:47,679 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 30 states and 33 transitions. Complement of second has 7 states. [2018-11-10 01:02:47,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 01:02:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 01:02:47,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-10 01:02:47,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,680 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 01:02:47,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:02:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:02:47,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:02:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:02:47,703 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 01:02:47,703 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 01:02:47,710 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 36 states and 43 transitions. Complement of second has 6 states. [2018-11-10 01:02:47,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 01:02:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 01:02:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2018-11-10 01:02:47,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 16 letters. Loop has 3 letters. [2018-11-10 01:02:47,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-10 01:02:47,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 16 letters. Loop has 6 letters. [2018-11-10 01:02:47,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 01:02:47,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2018-11-10 01:02:47,713 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 01:02:47,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2018-11-10 01:02:47,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 01:02:47,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 01:02:47,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 01:02:47,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 01:02:47,714 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 01:02:47,714 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 01:02:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 01:02:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 01:02:47,714 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2018-11-10 01:02:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:02:47,715 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 01:02:47,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 01:02:47,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 01:02:47,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 01:02:47,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 01:02:47,715 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 01:02:47,715 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 01:02:47,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 01:02:47,716 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 01:02:47,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 01:02:47,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 01:02:47 BoogieIcfgContainer [2018-11-10 01:02:47,721 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 01:02:47,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 01:02:47,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 01:02:47,721 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 01:02:47,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:02:45" (3/4) ... [2018-11-10 01:02:47,724 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 01:02:47,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 01:02:47,725 INFO L168 Benchmark]: Toolchain (without parser) took 2512.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 963.0 MB in the beginning and 1.1 GB in the end (delta: -114.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-11-10 01:02:47,725 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:02:47,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.21 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 01:02:47,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.18 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:02:47,726 INFO L168 Benchmark]: Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 01:02:47,727 INFO L168 Benchmark]: RCFGBuilder took 191.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:02:47,727 INFO L168 Benchmark]: BuchiAutomizer took 2155.97 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2018-11-10 01:02:47,728 INFO L168 Benchmark]: Witness Printer took 2.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:02:47,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.21 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 951.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.18 ms. Allocated memory is still 1.0 GB. Free memory is still 951.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.95 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 191.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2155.97 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 91 SDtfs, 70 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax173 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf93 smp100 dnf100 smp100 tf111 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...