./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:38:08,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:38:08,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:38:08,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:38:08,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:38:08,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:38:08,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:38:08,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:38:08,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:38:08,745 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:38:08,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:38:08,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:38:08,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:38:08,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:38:08,748 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:38:08,748 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:38:08,749 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:38:08,750 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:38:08,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:38:08,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:38:08,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:38:08,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:38:08,755 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:38:08,755 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:38:08,755 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:38:08,756 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:38:08,757 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:38:08,757 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:38:08,758 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:38:08,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:38:08,759 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:38:08,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:38:08,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:38:08,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:38:08,760 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:38:08,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:38:08,761 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 11:38:08,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:38:08,771 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:38:08,771 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:38:08,772 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 11:38:08,772 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 11:38:08,773 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:38:08,773 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 11:38:08,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 11:38:08,774 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:38:08,774 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 11:38:08,775 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 11:38:08,775 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_d0616358-d730-4ca0-946f-84a58a2b61d7/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 -> 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 [2018-11-28 11:38:08,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:38:08,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:38:08,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:38:08,809 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:38:08,809 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:38:08,810 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-28 11:38:08,855 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/data/a1fc7d07e/1fd512e2ef2940a085aaa06a4020a780/FLAG3a3be2d32 [2018-11-28 11:38:09,183 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:38:09,184 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-28 11:38:09,187 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/data/a1fc7d07e/1fd512e2ef2940a085aaa06a4020a780/FLAG3a3be2d32 [2018-11-28 11:38:09,196 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/data/a1fc7d07e/1fd512e2ef2940a085aaa06a4020a780 [2018-11-28 11:38:09,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:38:09,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:38:09,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:38:09,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:38:09,201 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:38:09,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee3dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09, skipping insertion in model container [2018-11-28 11:38:09,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:38:09,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:38:09,304 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:38:09,306 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:38:09,315 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:38:09,324 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:38:09,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09 WrapperNode [2018-11-28 11:38:09,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:38:09,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:38:09,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:38:09,325 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:38:09,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:38:09,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:38:09,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:38:09,351 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:38:09,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... [2018-11-28 11:38:09,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:38:09,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:38:09,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:38:09,367 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:38:09,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:38:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:38:09,534 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:38:09,534 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 11:38:09,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:09 BoogieIcfgContainer [2018-11-28 11:38:09,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:38:09,535 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 11:38:09,535 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 11:38:09,538 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 11:38:09,539 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:38:09,539 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:38:09" (1/3) ... [2018-11-28 11:38:09,540 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@401d8e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:38:09, skipping insertion in model container [2018-11-28 11:38:09,540 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:38:09,540 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:09" (2/3) ... [2018-11-28 11:38:09,541 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@401d8e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:38:09, skipping insertion in model container [2018-11-28 11:38:09,541 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:38:09,541 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:09" (3/3) ... [2018-11-28 11:38:09,542 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-28 11:38:09,591 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:38:09,592 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 11:38:09,592 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 11:38:09,592 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 11:38:09,592 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:38:09,592 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:38:09,593 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 11:38:09,593 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:38:09,593 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 11:38:09,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 11:38:09,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:38:09,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:38:09,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:38:09,627 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 11:38:09,627 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:38:09,627 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 11:38:09,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 11:38:09,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:38:09,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:38:09,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:38:09,629 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 11:38:09,629 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:38:09,635 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 3#L17-2true [2018-11-28 11:38:09,636 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 6#L19-2true assume !(main_~j~0 > 0); 5#L19-3true main_~i~0 := main_~i~0 - 1; 3#L17-2true [2018-11-28 11:38:09,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:09,641 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 11:38:09,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:09,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:09,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:09,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:09,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-28 11:38:09,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:09,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:09,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:09,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:09,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-28 11:38:09,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:09,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:09,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:09,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:09,806 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:09,806 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:09,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:09,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:09,807 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:38:09,807 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:09,807 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:09,807 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:09,807 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 11:38:09,807 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:09,807 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:09,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:09,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:09,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:09,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:09,931 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:09,932 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:09,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:09,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:09,957 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:38:09,957 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:09,962 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:09,962 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:09,980 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:38:09,980 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:09,983 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:09,984 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:09,987 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:38:09,987 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~N~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~N~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,002 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:10,002 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,018 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:38:10,018 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:10,035 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:38:10,035 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:10,036 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:10,036 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:10,036 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:10,036 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:38:10,036 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:10,036 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:10,036 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:10,036 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 11:38:10,036 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:10,036 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:10,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,112 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:10,116 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:38:10,118 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 [2018-11-28 11:38:10,119 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,119 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,119 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,119 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,122 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:38:10,122 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:38:10,127 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:38:10,128 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 [2018-11-28 11:38:10,128 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,129 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:38:10,129 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,129 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,129 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,130 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:38:10,130 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:38:10,132 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:38:10,133 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 [2018-11-28 11:38:10,133 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,133 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,134 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,134 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,136 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:38:10,136 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:38:10,142 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:38:10,143 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 [2018-11-28 11:38:10,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:38:10,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,145 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:38:10,145 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:38:10,149 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:38:10,152 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:38:10,152 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:38:10,154 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:38:10,154 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:38:10,154 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:38:10,155 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 11:38:10,156 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:38:10,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,217 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 [2018-11-28 11:38:10,218 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 11:38:10,243 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2018-11-28 11:38:10,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 11:38:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:38:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 11:38:10,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 11:38:10,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 11:38:10,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 11:38:10,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-28 11:38:10,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 11:38:10,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 11:38:10,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 11:38:10,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 11:38:10,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 11:38:10,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:38:10,254 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:38:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 11:38:10,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 11:38:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 11:38:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-28 11:38:10,270 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-28 11:38:10,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:38:10,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:38:10,273 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 4 states. [2018-11-28 11:38:10,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:10,297 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2018-11-28 11:38:10,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:38:10,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2018-11-28 11:38:10,298 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-28 11:38:10,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 15 transitions. [2018-11-28 11:38:10,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 11:38:10,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 11:38:10,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-11-28 11:38:10,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:38:10,299 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-11-28 11:38:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-11-28 11:38:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-11-28 11:38:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 11:38:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 11:38:10,301 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:38:10,301 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:38:10,301 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 11:38:10,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 11:38:10,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 11:38:10,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:38:10,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:38:10,305 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 11:38:10,305 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 11:38:10,305 INFO L794 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 91#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 93#L19-2 [2018-11-28 11:38:10,305 INFO L796 eck$LassoCheckResult]: Loop: 93#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 93#L19-2 [2018-11-28 11:38:10,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 11:38:10,306 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:10,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:10,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,312 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-28 11:38:10,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:10,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:10,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-28 11:38:10,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:10,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:10,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,339 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:10,339 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:10,339 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:10,339 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:10,339 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:38:10,340 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:10,340 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:10,340 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:10,340 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 11:38:10,340 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:10,340 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:10,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,395 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:10,395 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,397 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:10,397 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:10,411 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:38:10,412 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,414 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:10,414 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,432 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:38:10,432 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:10,448 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:38:10,449 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:10,449 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:10,449 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:10,449 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:10,449 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:38:10,449 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:10,449 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:10,449 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:10,450 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 11:38:10,450 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:10,450 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:10,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,492 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:10,492 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:38:10,493 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 [2018-11-28 11:38:10,494 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,494 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,494 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,494 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,496 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:38:10,496 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:38:10,499 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:38:10,500 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 [2018-11-28 11:38:10,500 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,500 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:38:10,500 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,501 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,501 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,501 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:38:10,501 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:38:10,504 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:38:10,507 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:38:10,507 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:38:10,508 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:38:10,508 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:38:10,508 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:38:10,508 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 11:38:10,509 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:38:10,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,530 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 [2018-11-28 11:38:10,530 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-28 11:38:10,536 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2018-11-28 11:38:10,537 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 [2018-11-28 11:38:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 11:38:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 11:38:10,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-28 11:38:10,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-28 11:38:10,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 11:38:10,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-11-28 11:38:10,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 11:38:10,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2018-11-28 11:38:10,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 11:38:10,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-28 11:38:10,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-28 11:38:10,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:38:10,540 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-28 11:38:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-28 11:38:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2018-11-28 11:38:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 11:38:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-28 11:38:10,541 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 11:38:10,541 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 11:38:10,541 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 11:38:10,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-28 11:38:10,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 11:38:10,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:38:10,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:38:10,542 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 11:38:10,542 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 11:38:10,542 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 141#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 142#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 145#L19-2 assume !(main_~j~0 > 0); 146#L19-3 main_~i~0 := main_~i~0 - 1; 143#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 144#L19-2 [2018-11-28 11:38:10,543 INFO L796 eck$LassoCheckResult]: Loop: 144#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 144#L19-2 [2018-11-28 11:38:10,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2018-11-28 11:38:10,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:10,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:10,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:38:10,588 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 11:38:10,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:38:10,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-28 11:38:10,661 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:38:10,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,661 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-28 11:38:10,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:10,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:10,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:10,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:38:10,678 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:10,678 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:10,678 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:10,678 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:10,678 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:38:10,678 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:10,678 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:10,678 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:10,679 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 11:38:10,679 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:10,679 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:10,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,727 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:10,727 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,732 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:10,732 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:10,749 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:38:10,749 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,752 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:38:10,752 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d0616358-d730-4ca0-946f-84a58a2b61d7/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 [2018-11-28 11:38:10,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:38:10,768 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:38:10,784 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:38:10,785 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:38:10,785 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:38:10,785 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:38:10,785 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:38:10,785 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:38:10,785 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:38:10,785 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:38:10,785 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:38:10,785 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 11:38:10,785 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:38:10,786 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:38:10,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:38:10,812 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:38:10,813 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:38:10,813 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 [2018-11-28 11:38:10,813 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,814 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,814 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,814 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,815 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:38:10,815 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:38:10,819 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:38:10,820 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:38:10,820 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:38:10,820 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:38:10,820 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:38:10,821 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:38:10,821 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:38:10,821 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:38:10,821 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:38:10,824 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:38:10,826 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:38:10,826 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:38:10,826 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:38:10,826 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:38:10,827 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:38:10,827 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-28 11:38:10,827 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:38:10,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,849 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 [2018-11-28 11:38:10,849 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 11:38:10,855 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2018-11-28 11:38:10,855 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 [2018-11-28 11:38:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 11:38:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 11:38:10,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 11:38:10,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,856 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 11:38:10,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,869 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 11:38:10,870 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 11:38:10,874 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2018-11-28 11:38:10,874 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 [2018-11-28 11:38:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 11:38:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 11:38:10,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 11:38:10,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,875 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 11:38:10,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:10,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:10,898 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 1 loop predicates [2018-11-28 11:38:10,899 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 11:38:10,915 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2018-11-28 11:38:10,915 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 [2018-11-28 11:38:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 11:38:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 11:38:10,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 11:38:10,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 11:38:10,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 11:38:10,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:38:10,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-28 11:38:10,917 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:38:10,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-28 11:38:10,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:38:10,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:38:10,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:38:10,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:38:10,918 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:10,918 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:38:10,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:38:10,919 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-28 11:38:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:10,919 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 11:38:10,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:38:10,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 11:38:10,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:38:10,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:38:10,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:38:10,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:38:10,920 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 11:38:10,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:38:10,920 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:38:10,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 11:38:10,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:38:10 BoogieIcfgContainer [2018-11-28 11:38:10,925 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 11:38:10,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:38:10,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:38:10,926 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:38:10,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:09" (3/4) ... [2018-11-28 11:38:10,928 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:38:10,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:38:10,929 INFO L168 Benchmark]: Toolchain (without parser) took 1731.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 959.8 MB in the beginning and 923.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 190.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:10,930 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:38:10,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 951.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:10,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 942.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:10,931 INFO L168 Benchmark]: Boogie Preprocessor took 16.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:38:10,931 INFO L168 Benchmark]: RCFGBuilder took 167.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:10,931 INFO L168 Benchmark]: BuchiAutomizer took 1390.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.9 MB in the end (delta: 213.9 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:10,932 INFO L168 Benchmark]: Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 923.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:38:10,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 951.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.54 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 942.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.07 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 167.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1390.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.9 MB in the end (delta: 213.9 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 923.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function j and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 25 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...