./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/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 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:06:25,955 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:25,957 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:25,968 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:25,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:25,970 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:25,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:25,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:25,977 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:25,979 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:25,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:25,981 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:25,982 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:25,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:25,991 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:25,992 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:25,992 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:25,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:25,997 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:25,998 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:25,998 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:25,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:26,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:26,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:26,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:26,001 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:26,005 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:26,007 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:26,008 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:26,009 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:26,010 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:26,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:26,012 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:26,013 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:26,014 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:26,015 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:26,016 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:06:26,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:26,031 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:26,032 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:26,033 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:26,033 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:26,033 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:26,034 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:26,034 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:26,035 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:26,035 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:26,035 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:26,035 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:26,035 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:26,036 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:26,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:26,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:26,037 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:26,037 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:26,037 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:26,037 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:26,038 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:26,038 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_eeb6308a-a7b4-4651-b9ff-0ea10db09417/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 -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2018-10-27 06:06:26,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:26,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:26,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:26,095 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:26,096 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:26,097 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-10-27 06:06:26,143 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/data/0b6dc6d89/85514f844c974d61b4460fdd8d4a7e2c/FLAGbc702b2a6 [2018-10-27 06:06:26,491 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:26,492 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-10-27 06:06:26,497 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/data/0b6dc6d89/85514f844c974d61b4460fdd8d4a7e2c/FLAGbc702b2a6 [2018-10-27 06:06:26,514 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/data/0b6dc6d89/85514f844c974d61b4460fdd8d4a7e2c [2018-10-27 06:06:26,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:26,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:26,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:26,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:26,525 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:26,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4845e82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26, skipping insertion in model container [2018-10-27 06:06:26,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:26,553 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:26,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:26,680 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:26,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:26,704 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:26,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26 WrapperNode [2018-10-27 06:06:26,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:26,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:26,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:26,705 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:26,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:26,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:26,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:26,741 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:26,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... [2018-10-27 06:06:26,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:26,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:26,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:26,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:26,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:26,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:27,087 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:27,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:27 BoogieIcfgContainer [2018-10-27 06:06:27,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:27,088 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:27,088 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:27,091 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:27,091 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:27,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:26" (1/3) ... [2018-10-27 06:06:27,092 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25211ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:27, skipping insertion in model container [2018-10-27 06:06:27,092 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:27,093 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:26" (2/3) ... [2018-10-27 06:06:27,093 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25211ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:27, skipping insertion in model container [2018-10-27 06:06:27,093 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:27,093 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:27" (3/3) ... [2018-10-27 06:06:27,095 INFO L375 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-10-27 06:06:27,151 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:27,152 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:27,152 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:27,152 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:27,152 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:27,152 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:27,152 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:27,152 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:27,153 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:27,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:06:27,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:06:27,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:27,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:27,232 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:27,241 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:27,242 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:27,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:06:27,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:06:27,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:27,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:27,243 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:27,243 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:27,251 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 12#L27-2true [2018-10-27 06:06:27,258 INFO L795 eck$LassoCheckResult]: Loop: 12#L27-2true assume true; 7#L18-1true assume !!(main_~x~0 != 0 && main_~y~0 > 0); 9#L19true assume !(main_~x~0 > 0); 6#L27true assume main_#t~nondet4 != 0;havoc main_#t~nondet4;main_~x~0 := main_~x~0 + 1; 12#L27-2true [2018-10-27 06:06:27,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:27,270 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:06:27,271 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:27,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:27,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:27,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1114538, now seen corresponding path program 1 times [2018-10-27 06:06:27,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:27,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:27,394 INFO L82 PathProgramCache]: Analyzing trace with hash 889541740, now seen corresponding path program 1 times [2018-10-27 06:06:27,394 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:27,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:27,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:27,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:27,502 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:27,503 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:27,503 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:27,503 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:27,503 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:27,503 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,504 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:27,504 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:27,504 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:27,504 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:27,504 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:27,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,813 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:27,814 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:27,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:27,841 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:27,841 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,845 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:27,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:27,864 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:27,864 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:27,868 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:27,906 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:27,954 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:27,956 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:27,956 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:27,957 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:27,957 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:27,957 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:27,957 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:27,957 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:27,957 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:27,957 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:27,957 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:27,957 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:27,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:27,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,227 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:28,232 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:28,233 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:28,234 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:28,234 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:28,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:28,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:28,238 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:28,238 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:28,248 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:28,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:28,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:28,249 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:28,250 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:28,250 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:28,254 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:28,255 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:28,255 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:28,260 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:28,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:28,266 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:28,267 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:28,268 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:28,268 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:28,268 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:28,271 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:28,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:28,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:28,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:28,373 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 [2018-10-27 06:06:28,374 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-10-27 06:06:28,423 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 36 states and 48 transitions. Complement of second has 8 states. [2018-10-27 06:06:28,424 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 [2018-10-27 06:06:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-10-27 06:06:28,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2018-10-27 06:06:28,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:28,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2018-10-27 06:06:28,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:28,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2018-10-27 06:06:28,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:28,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 48 transitions. [2018-10-27 06:06:28,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:06:28,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 28 transitions. [2018-10-27 06:06:28,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-10-27 06:06:28,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-10-27 06:06:28,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2018-10-27 06:06:28,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:28,437 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-10-27 06:06:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2018-10-27 06:06:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-10-27 06:06:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 06:06:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-10-27 06:06:28,461 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-10-27 06:06:28,461 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-10-27 06:06:28,461 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:28,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2018-10-27 06:06:28,462 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:06:28,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:28,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:28,462 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:28,462 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:28,463 INFO L793 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L27-2 assume true; 108#L18-1 [2018-10-27 06:06:28,463 INFO L795 eck$LassoCheckResult]: Loop: 108#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 109#L19 assume main_~x~0 > 0; 110#L20 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 111#L27-2 assume true; 108#L18-1 [2018-10-27 06:06:28,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:06:28,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:28,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1296054, now seen corresponding path program 1 times [2018-10-27 06:06:28,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:28,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:28,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:28,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982296, now seen corresponding path program 1 times [2018-10-27 06:06:28,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:28,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:28,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:28,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:28,527 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:28,527 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:28,527 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:28,527 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:28,527 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:28,528 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:28,528 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:28,528 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:28,528 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:06:28,528 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:28,528 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:28,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:28,977 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:28,977 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:28,980 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:28,980 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,000 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,000 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,003 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,003 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,026 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,026 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,030 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,030 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,048 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,048 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,055 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,055 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,057 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,057 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,077 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,097 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:29,097 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,127 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:29,128 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:29,129 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:29,129 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:29,129 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:29,129 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:29,129 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,129 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:29,129 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:29,130 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:06:29,130 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:29,130 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:29,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,248 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:29,248 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:29,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:29,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:29,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:29,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:29,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:29,251 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:29,251 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:29,257 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:29,257 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:29,258 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:29,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:29,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:29,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:29,260 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:29,260 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:29,269 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:29,269 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:29,270 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:29,270 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:29,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:29,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:29,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:29,271 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:29,271 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:29,273 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:29,273 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:29,274 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:29,274 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:29,274 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:29,274 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:29,274 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:29,275 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:29,275 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:29,277 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:29,277 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:29,278 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:29,278 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:29,278 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:29,278 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:29,278 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:29,279 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:29,279 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:29,284 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:29,287 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:29,287 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:29,288 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:29,288 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:29,288 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:29,288 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:29,289 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:29,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:29,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:29,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:29,642 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:29,642 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-10-27 06:06:29,661 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 48 states and 65 transitions. Complement of second has 7 states. [2018-10-27 06:06:29,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-10-27 06:06:29,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2018-10-27 06:06:29,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:29,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:29,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:29,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 8 letters. [2018-10-27 06:06:29,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:29,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2018-10-27 06:06:29,665 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:06:29,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2018-10-27 06:06:29,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-10-27 06:06:29,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-10-27 06:06:29,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2018-10-27 06:06:29,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:29,669 INFO L705 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-10-27 06:06:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2018-10-27 06:06:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-10-27 06:06:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-27 06:06:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2018-10-27 06:06:29,673 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-10-27 06:06:29,673 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-10-27 06:06:29,673 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:29,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 55 transitions. [2018-10-27 06:06:29,674 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-10-27 06:06:29,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:29,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:29,675 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:06:29,675 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:29,675 INFO L793 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 207#L27-2 assume true; 222#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 214#L19 assume main_~x~0 > 0; 217#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 226#L27-2 [2018-10-27 06:06:29,675 INFO L795 eck$LassoCheckResult]: Loop: 226#L27-2 assume true; 234#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 233#L19 assume main_~x~0 > 0; 231#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 226#L27-2 [2018-10-27 06:06:29,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 889541484, now seen corresponding path program 1 times [2018-10-27 06:06:29,676 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:29,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:29,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:29,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:29,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1114282, now seen corresponding path program 1 times [2018-10-27 06:06:29,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:29,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:29,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:29,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1038571883, now seen corresponding path program 2 times [2018-10-27 06:06:29,706 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:29,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:29,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:29,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:29,766 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:29,766 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:29,766 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:29,766 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:29,767 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:29,767 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,767 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:29,767 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:29,767 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:29,767 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:29,767 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:29,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:29,913 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:29,913 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,916 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,916 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,925 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,925 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,944 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,961 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,961 INFO L446 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_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,966 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:29,969 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:29,969 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:29,989 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:29,989 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,011 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:30,011 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:30,041 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:30,043 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:30,044 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:30,044 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:30,044 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:30,044 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:30,044 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,044 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:30,044 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:30,044 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:30,044 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:30,044 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:30,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,224 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:30,224 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:30,225 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,226 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,226 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,226 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,226 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:30,226 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,227 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:30,227 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,234 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:30,234 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:30,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,237 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:30,237 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:30,245 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:30,245 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,247 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,247 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,247 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,247 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:30,247 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,248 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:30,248 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,253 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:30,253 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,254 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,254 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,254 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,254 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:30,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,255 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:30,255 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,260 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:30,263 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:30,263 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:30,263 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:30,263 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:30,263 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:30,264 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:30,264 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:30,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:30,316 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 [2018-10-27 06:06:30,316 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 55 transitions. cyclomatic complexity: 22 Second operand 4 states. [2018-10-27 06:06:30,350 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 55 transitions. cyclomatic complexity: 22. Second operand 4 states. Result 60 states and 85 transitions. Complement of second has 8 states. [2018-10-27 06:06:30,350 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 [2018-10-27 06:06:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-10-27 06:06:30,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 6 letters. Loop has 4 letters. [2018-10-27 06:06:30,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 4 letters. [2018-10-27 06:06:30,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 6 letters. Loop has 8 letters. [2018-10-27 06:06:30,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 85 transitions. [2018-10-27 06:06:30,355 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2018-10-27 06:06:30,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 54 states and 75 transitions. [2018-10-27 06:06:30,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-10-27 06:06:30,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-10-27 06:06:30,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 75 transitions. [2018-10-27 06:06:30,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:30,357 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 75 transitions. [2018-10-27 06:06:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 75 transitions. [2018-10-27 06:06:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-10-27 06:06:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-27 06:06:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2018-10-27 06:06:30,360 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 71 transitions. [2018-10-27 06:06:30,360 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 71 transitions. [2018-10-27 06:06:30,360 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:06:30,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 71 transitions. [2018-10-27 06:06:30,364 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2018-10-27 06:06:30,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:30,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:30,365 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-10-27 06:06:30,365 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:30,365 INFO L793 eck$LassoCheckResult]: Stem: 362#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 360#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 361#L27-2 assume true; 375#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 368#L19 assume !(main_~x~0 > 0); 385#L27 assume !(main_#t~nondet4 != 0);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 382#L27-2 assume true; 383#L18-1 [2018-10-27 06:06:30,365 INFO L795 eck$LassoCheckResult]: Loop: 383#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 396#L19 assume !(main_~x~0 > 0); 397#L27 assume main_#t~nondet4 != 0;havoc main_#t~nondet4;main_~x~0 := main_~x~0 + 1; 403#L27-2 assume true; 383#L18-1 [2018-10-27 06:06:30,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1805990232, now seen corresponding path program 1 times [2018-10-27 06:06:30,366 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:30,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:30,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:30,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1303928, now seen corresponding path program 2 times [2018-10-27 06:06:30,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:30,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:30,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:30,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,379 INFO L82 PathProgramCache]: Analyzing trace with hash 960404303, now seen corresponding path program 1 times [2018-10-27 06:06:30,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:30,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:30,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:30,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:30,426 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:30,426 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:30,426 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:30,426 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:30,426 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:30,426 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,426 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:30,426 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:30,426 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:06:30,426 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:30,427 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:30,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,501 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:30,501 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,512 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:30,512 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:30,528 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:30,528 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,532 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:30,532 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:30,535 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:30,535 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-8} Honda state: {ULTIMATE.start_main_#t~nondet4=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:30,553 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:30,569 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:30,570 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:30,573 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,592 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:30,592 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:30,610 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:30,612 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:30,612 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:30,612 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:30,612 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:30,612 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:30,612 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:30,612 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:30,612 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:30,612 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:06:30,612 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:30,613 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:30,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:30,691 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:30,691 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:30,691 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,692 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,692 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,692 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,692 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:30,693 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,693 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:30,693 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,694 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:30,695 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,695 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,695 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,695 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,695 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:30,695 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,696 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:30,696 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,703 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:30,704 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:30,704 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:30,704 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:30,705 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:30,705 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:30,705 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:30,710 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:30,710 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:30,712 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:30,715 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:30,716 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:30,716 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:30,716 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:30,716 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:30,716 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:30,717 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:30,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:30,770 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:30,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-10-27 06:06:30,812 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 72 states and 101 transitions. Complement of second has 7 states. [2018-10-27 06:06:30,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-10-27 06:06:30,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:30,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,817 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:30,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:30,865 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:30,865 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-10-27 06:06:30,892 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 72 states and 101 transitions. Complement of second has 7 states. [2018-10-27 06:06:30,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-10-27 06:06:30,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:30,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,896 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:30,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:30,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:30,930 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 3 loop predicates [2018-10-27 06:06:30,931 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-10-27 06:06:30,960 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 109 states and 151 transitions. Complement of second has 9 states. [2018-10-27 06:06:30,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-10-27 06:06:30,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:30,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2018-10-27 06:06:30,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 8 letters. [2018-10-27 06:06:30,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:30,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 151 transitions. [2018-10-27 06:06:30,974 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2018-10-27 06:06:30,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 80 states and 110 transitions. [2018-10-27 06:06:30,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-10-27 06:06:30,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-10-27 06:06:30,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 110 transitions. [2018-10-27 06:06:30,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:30,976 INFO L705 BuchiCegarLoop]: Abstraction has 80 states and 110 transitions. [2018-10-27 06:06:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 110 transitions. [2018-10-27 06:06:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2018-10-27 06:06:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-27 06:06:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2018-10-27 06:06:30,982 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 85 transitions. [2018-10-27 06:06:30,982 INFO L608 BuchiCegarLoop]: Abstraction has 60 states and 85 transitions. [2018-10-27 06:06:30,983 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:06:30,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 85 transitions. [2018-10-27 06:06:30,983 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2018-10-27 06:06:30,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:30,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:30,984 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-10-27 06:06:30,984 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:30,984 INFO L793 eck$LassoCheckResult]: Stem: 810#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 808#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 809#L27-2 assume true; 821#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 818#L19 assume main_~x~0 > 0; 819#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 839#L27-2 assume true; 837#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 835#L19 assume !(main_~x~0 > 0); 811#L27 [2018-10-27 06:06:30,984 INFO L795 eck$LassoCheckResult]: Loop: 811#L27 assume !(main_#t~nondet4 != 0);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 812#L27-2 assume true; 847#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 828#L19 assume !(main_~x~0 > 0); 811#L27 [2018-10-27 06:06:30,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash 382139685, now seen corresponding path program 1 times [2018-10-27 06:06:30,985 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:30,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:30,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:30,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:31,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:31,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:06:31,111 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:06:31,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1763830, now seen corresponding path program 1 times [2018-10-27 06:06:31,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:31,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:31,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:31,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,138 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:31,139 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:31,139 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:31,139 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:31,139 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:31,139 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,139 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:31,139 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:31,139 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-10-27 06:06:31,139 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:31,139 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:31,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,247 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:31,247 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,250 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,258 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:31,258 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,276 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,276 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,296 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:31,296 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,351 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:31,352 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:31,352 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:31,352 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:31,352 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:31,352 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:31,352 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,352 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:31,352 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:31,352 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-10-27 06:06:31,352 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:31,352 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:31,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,436 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:31,436 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:31,436 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,437 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,437 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:31,437 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,437 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,437 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,438 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:31,438 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:31,439 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:31,439 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,439 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,439 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,440 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,440 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,441 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:31,441 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:31,443 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:31,443 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,443 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,443 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:31,444 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,444 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,444 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,444 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:31,444 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:31,446 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:31,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:31,448 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:31,449 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:31,449 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:31,449 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:31,449 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:31,449 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:31,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:31,503 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:31,503 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 85 transitions. cyclomatic complexity: 31 Second operand 4 states. [2018-10-27 06:06:31,523 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 85 transitions. cyclomatic complexity: 31. Second operand 4 states. Result 213 states and 297 transitions. Complement of second has 7 states. [2018-10-27 06:06:31,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-10-27 06:06:31,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 4 letters. [2018-10-27 06:06:31,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:31,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 4 letters. [2018-10-27 06:06:31,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:31,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 8 letters. [2018-10-27 06:06:31,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:31,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 297 transitions. [2018-10-27 06:06:31,533 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2018-10-27 06:06:31,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 159 states and 220 transitions. [2018-10-27 06:06:31,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-10-27 06:06:31,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-10-27 06:06:31,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 220 transitions. [2018-10-27 06:06:31,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:31,535 INFO L705 BuchiCegarLoop]: Abstraction has 159 states and 220 transitions. [2018-10-27 06:06:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 220 transitions. [2018-10-27 06:06:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 125. [2018-10-27 06:06:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-27 06:06:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2018-10-27 06:06:31,545 INFO L728 BuchiCegarLoop]: Abstraction has 125 states and 179 transitions. [2018-10-27 06:06:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:06:31,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:06:31,549 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand 4 states. [2018-10-27 06:06:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:31,592 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2018-10-27 06:06:31,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:06:31,594 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 125 transitions. [2018-10-27 06:06:31,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:31,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 78 states and 103 transitions. [2018-10-27 06:06:31,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-10-27 06:06:31,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-10-27 06:06:31,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 103 transitions. [2018-10-27 06:06:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:31,596 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 103 transitions. [2018-10-27 06:06:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 103 transitions. [2018-10-27 06:06:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 51. [2018-10-27 06:06:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-27 06:06:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2018-10-27 06:06:31,598 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 70 transitions. [2018-10-27 06:06:31,598 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 70 transitions. [2018-10-27 06:06:31,598 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:06:31,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 70 transitions. [2018-10-27 06:06:31,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:31,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:31,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:31,600 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-10-27 06:06:31,600 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:31,600 INFO L793 eck$LassoCheckResult]: Stem: 1367#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1365#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1366#L27-2 assume true; 1377#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 1371#L19 assume main_~x~0 > 0; 1374#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 1383#L27-2 assume true; 1385#L18-1 [2018-10-27 06:06:31,600 INFO L795 eck$LassoCheckResult]: Loop: 1385#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 1384#L19 assume main_~x~0 > 0; 1380#L20 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 1381#L27-2 assume true; 1385#L18-1 [2018-10-27 06:06:31,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982234, now seen corresponding path program 3 times [2018-10-27 06:06:31,600 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:31,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:31,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:31,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1296054, now seen corresponding path program 2 times [2018-10-27 06:06:31,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:31,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:31,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:31,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2130957233, now seen corresponding path program 1 times [2018-10-27 06:06:31,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:31,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:31,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:31,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:31,648 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:31,648 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:31,648 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:31,648 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:31,649 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:31,649 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,649 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:31,649 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:31,649 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:06:31,649 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:31,649 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:31,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,701 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:31,701 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,703 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,706 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:31,706 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,724 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,724 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,741 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:31,741 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,744 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,745 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,762 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:31,762 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,766 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:31,766 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eeb6308a-a7b4-4651-b9ff-0ea10db09417/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,785 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:31,785 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:31,831 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:31,832 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:31,832 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:31,832 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:31,833 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:31,833 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:31,833 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:31,833 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:31,833 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:31,833 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-10-27 06:06:31,833 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:31,833 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:31,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:31,914 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:31,914 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:31,914 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,915 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,915 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:31,915 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,915 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,915 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,916 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:31,916 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:31,916 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:31,917 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,917 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,917 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,917 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,917 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,918 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:31,918 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:31,921 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:31,921 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:31,922 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:31,922 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:31,922 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:31,922 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:31,922 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:31,922 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:31,922 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:31,925 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:31,926 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:31,927 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:31,927 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:31,927 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:31,927 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:31,927 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:31,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:31,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:31,960 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:31,960 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-10-27 06:06:31,977 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 93 states and 130 transitions. Complement of second has 7 states. [2018-10-27 06:06:31,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-10-27 06:06:31,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:31,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:31,981 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:31,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:31,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:32,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:32,019 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:32,019 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-10-27 06:06:32,037 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 94 states and 132 transitions. Complement of second has 7 states. [2018-10-27 06:06:32,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-10-27 06:06:32,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:32,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:32,039 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:32,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:32,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:32,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:32,070 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 3 loop predicates [2018-10-27 06:06:32,070 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-10-27 06:06:32,081 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 103 states and 143 transitions. Complement of second has 8 states. [2018-10-27 06:06:32,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-10-27 06:06:32,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2018-10-27 06:06:32,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:32,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-10-27 06:06:32,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:32,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2018-10-27 06:06:32,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:32,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 143 transitions. [2018-10-27 06:06:32,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:32,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 0 states and 0 transitions. [2018-10-27 06:06:32,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:32,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:32,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:32,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:32,087 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:32,087 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:32,088 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:32,088 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:06:32,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:06:32,088 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:32,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:06:32,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:06:32 BoogieIcfgContainer [2018-10-27 06:06:32,094 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:06:32,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:06:32,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:06:32,095 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:06:32,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:27" (3/4) ... [2018-10-27 06:06:32,098 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:06:32,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:06:32,099 INFO L168 Benchmark]: Toolchain (without parser) took 5580.51 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.1 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -109.3 MB). Peak memory consumption was 129.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:32,100 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:32,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.96 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:32,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.05 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:32,101 INFO L168 Benchmark]: Boogie Preprocessor took 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:32,101 INFO L168 Benchmark]: RCFGBuilder took 326.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -221.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:32,102 INFO L168 Benchmark]: BuchiAutomizer took 5006.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.0 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Peak memory consumption was 163.6 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:32,102 INFO L168 Benchmark]: Witness Printer took 3.36 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:32,105 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.96 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.05 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 326.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -221.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5006.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.0 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Peak memory consumption was 163.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.36 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 60 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 111 SDtfs, 121 SDslu, 59 SDs, 0 SdLazy, 138 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf94 smp86 dnf100 smp100 tf113 neg98 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...