YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 01:43:22,457 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 01:43:22,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 01:43:22,470 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 01:43:22,470 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 01:43:22,471 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 01:43:22,472 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 01:43:22,474 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 01:43:22,475 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 01:43:22,476 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 01:43:22,477 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 01:43:22,477 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 01:43:22,478 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 01:43:22,479 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 01:43:22,480 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 01:43:22,480 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 01:43:22,481 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 01:43:22,483 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 01:43:22,485 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 01:43:22,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 01:43:22,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 01:43:22,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 01:43:22,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 01:43:22,491 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 01:43:22,491 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 01:43:22,491 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 01:43:22,492 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 01:43:22,493 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 01:43:22,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 01:43:22,494 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 01:43:22,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 01:43:22,495 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 01:43:22,496 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 01:43:22,496 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 01:43:22,497 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 01:43:22,497 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 01:43:22,497 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 01:43:22,498 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 01:43:22,499 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 01:43:22,499 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 01:43:22,513 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 01:43:22,514 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 01:43:22,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 01:43:22,515 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 01:43:22,515 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 01:43:22,515 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:43:22,515 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 01:43:22,515 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 01:43:22,516 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 01:43:22,517 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:22,517 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 01:43:22,517 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 01:43:22,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 01:43:22,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 01:43:22,517 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 01:43:22,518 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 01:43:22,518 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 01:43:22,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 01:43:22,518 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 01:43:22,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 01:43:22,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 01:43:22,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 01:43:22,519 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 01:43:22,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 01:43:22,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 01:43:22,556 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 01:43:22,559 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 01:43:22,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 01:43:22,561 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 01:43:22,562 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 01:43:22,631 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/4a23236cc325466aa1549fde59ba6204/FLAGec1b0013f !SESSION 2020-06-22 01:43:20.141 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-22 01:43:22.900 !MESSAGE Indexed 'FLAGec1b0013f' (0 sources, 0 headers) in 0.007 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-22 01:43:22,980 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 01:43:22,980 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 01:43:22,987 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/4a23236cc325466aa1549fde59ba6204/FLAGec1b0013f [2020-06-22 01:43:23,425 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/4a23236cc325466aa1549fde59ba6204 [2020-06-22 01:43:23,436 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 01:43:23,438 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 01:43:23,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 01:43:23,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 01:43:23,443 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 01:43:23,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e965305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23, skipping insertion in model container [2020-06-22 01:43:23,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 01:43:23,471 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 01:43:23,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:43:23,628 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 01:43:23,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:43:23,712 INFO L195 MainTranslator]: Completed translation [2020-06-22 01:43:23,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23 WrapperNode [2020-06-22 01:43:23,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 01:43:23,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 01:43:23,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 01:43:23,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 01:43:23,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 01:43:23,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 01:43:23,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 01:43:23,747 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 01:43:23,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 01:43:23,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 01:43:23,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 01:43:23,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 01:43:23,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 01:43:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 01:43:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 01:43:23,955 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 01:43:23,955 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 01:43:23,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:43:23 BoogieIcfgContainer [2020-06-22 01:43:23,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 01:43:23,957 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 01:43:23,957 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 01:43:23,959 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 01:43:23,960 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:43:23" (1/1) ... [2020-06-22 01:43:23,974 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-22 01:43:23,975 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 01:43:23,976 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 01:43:23,977 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 01:43:23,977 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:43:23,979 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 01:43:23,980 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 01:43:23,980 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 01:43:23,994 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 01:43:24,001 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-22 01:43:24,006 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 01:43:24,007 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:43:24,019 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 01:43:24,021 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 01:43:24,023 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 01:43:24,023 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:43:24,023 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 01:43:24,023 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 01:43:24,024 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-22 01:43:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:43:24 BasicIcfg [2020-06-22 01:43:24,024 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 01:43:24,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 01:43:24,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 01:43:24,028 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 01:43:24,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 01:43:23" (1/4) ... [2020-06-22 01:43:24,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5312adc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (2/4) ... [2020-06-22 01:43:24,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5312adc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:43:23" (3/4) ... [2020-06-22 01:43:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5312adc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:43:24" (4/4) ... [2020-06-22 01:43:24,032 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:43:24,043 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 01:43:24,050 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 01:43:24,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 01:43:24,094 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:43:24,095 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 01:43:24,095 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 01:43:24,095 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:43:24,095 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:43:24,096 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:43:24,096 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 01:43:24,096 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:43:24,096 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 01:43:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 01:43:24,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 01:43:24,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 01:43:24,166 INFO L451 ceAbstractionStarter]: At program point L19-2(lines 17 24) the Hoare annotation is: true [2020-06-22 01:43:24,166 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 01:43:24,166 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-06-22 01:43:24,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:43:24 BasicIcfg [2020-06-22 01:43:24,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 01:43:24,176 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 01:43:24,176 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 01:43:24,179 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 01:43:24,180 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:43:24,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 01:43:23" (1/5) ... [2020-06-22 01:43:24,181 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@abb65e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,181 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:43:24,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:43:23" (2/5) ... [2020-06-22 01:43:24,181 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@abb65e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,181 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:43:24,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:43:23" (3/5) ... [2020-06-22 01:43:24,182 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@abb65e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,182 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:43:24,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:43:24" (4/5) ... [2020-06-22 01:43:24,183 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@abb65e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:43:24, skipping insertion in model container [2020-06-22 01:43:24,183 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:43:24,183 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:43:24" (5/5) ... [2020-06-22 01:43:24,184 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:43:24,212 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:43:24,212 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 01:43:24,213 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 01:43:24,213 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:43:24,213 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:43:24,213 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:43:24,213 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 01:43:24,213 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:43:24,214 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 01:43:24,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 01:43:24,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 01:43:24,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:24,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:24,240 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:43:24,241 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 01:43:24,241 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 01:43:24,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 01:43:24,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 01:43:24,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:24,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:24,242 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:43:24,242 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 01:43:24,247 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~a~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0] 4#L19-2true [2020-06-22 01:43:24,248 INFO L796 eck$LassoCheckResult]: Loop: 4#L19-2true [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 5#L19true [34] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_9 (- v_ULTIMATE.start_main_~b~0_10)) (> 0 v_ULTIMATE.start_main_~b~0_10)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 4#L19-2true [2020-06-22 01:43:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-06-22 01:43:24,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:24,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:24,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:24,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1863, now seen corresponding path program 1 times [2020-06-22 01:43:24,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:24,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:24,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:24,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 54718, now seen corresponding path program 1 times [2020-06-22 01:43:24,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:24,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:24,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:24,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,401 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:24,402 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:24,402 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:24,402 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:24,402 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:43:24,402 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:24,402 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:24,403 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:24,403 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 01:43:24,403 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:24,403 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:24,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,533 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:24,534 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:24,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:24,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:24,574 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:24,574 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:24,580 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:24,581 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:24,608 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:24,609 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:24,613 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:24,614 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:24,654 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:43:24,654 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:24,698 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:43:24,701 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:24,701 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:24,701 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:24,701 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:24,701 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:43:24,702 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:43:24,702 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:24,702 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:24,702 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 01:43:24,702 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:24,702 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:24,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:24,789 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:24,795 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:43:24,796 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 [2020-06-22 01:43:24,798 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:24,798 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:24,798 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:24,798 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:24,803 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:24,803 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:24,812 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:24,812 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 01:43:24,813 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:24,813 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:43:24,814 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:24,814 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:24,814 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:24,815 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:43:24,815 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:43:24,824 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:43:24,829 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-06-22 01:43:24,829 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 01:43:24,831 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:43:24,831 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:43:24,831 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:43:24,832 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = -1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-06-22 01:43:24,833 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:43:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:24,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:43:24,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:24,884 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 01:43:24,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:43:24,899 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 01:43:24,904 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 01:43:24,905 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 01:43:24,931 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-06-22 01:43:24,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 01:43:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 01:43:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 01:43:24,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 01:43:24,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:24,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 01:43:24,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:24,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 01:43:24,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:24,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-06-22 01:43:24,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 01:43:24,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 01:43:24,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 01:43:24,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 01:43:24,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-06-22 01:43:24,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 01:43:24,950 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 01:43:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-06-22 01:43:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-22 01:43:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 01:43:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 01:43:24,979 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 01:43:24,979 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 01:43:24,980 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 01:43:24,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-06-22 01:43:24,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 01:43:24,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:24,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:24,981 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 01:43:24,981 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 01:43:24,981 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~a~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0] 42#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 47#L19 [29] L19-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~b~0_7 (+ (* (- 1) v_ULTIMATE.start_main_~b~0_8) (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 43#L19-2 [2020-06-22 01:43:24,982 INFO L796 eck$LassoCheckResult]: Loop: 43#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 44#L19 [34] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_9 (- v_ULTIMATE.start_main_~b~0_10)) (> 0 v_ULTIMATE.start_main_~b~0_10)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 43#L19-2 [2020-06-22 01:43:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 54713, now seen corresponding path program 1 times [2020-06-22 01:43:24,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:24,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:24,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:24,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1863, now seen corresponding path program 2 times [2020-06-22 01:43:24,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:24,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:24,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:24,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:24,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash 52580095, now seen corresponding path program 1 times [2020-06-22 01:43:25,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:25,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,039 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:25,040 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:25,040 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:25,040 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:25,040 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:43:25,040 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,040 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:25,040 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:25,041 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 01:43:25,041 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:25,041 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:25,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,122 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:25,122 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,128 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,128 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:25,156 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:25,157 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,162 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,163 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:25,190 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:25,191 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,196 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,196 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,228 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:43:25,228 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:25,270 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:43:25,272 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:25,272 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:25,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:25,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:25,272 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:43:25,273 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:43:25,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:25,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:25,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 01:43:25,274 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:25,274 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:25,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,352 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:25,352 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:43:25,353 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 [2020-06-22 01:43:25,353 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:25,354 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:25,354 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:25,354 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:25,356 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:25,356 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:25,361 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:25,361 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 [2020-06-22 01:43:25,362 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:25,362 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:25,362 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:25,362 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:25,364 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:25,364 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:25,370 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:25,370 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 [2020-06-22 01:43:25,371 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:25,371 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:43:25,371 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:25,371 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:25,371 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:25,372 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:43:25,373 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:43:25,378 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:43:25,382 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-06-22 01:43:25,382 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 01:43:25,382 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:43:25,382 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:43:25,383 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:43:25,383 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = -1*ULTIMATE.start_main_~b~0 Supporting invariants [] [2020-06-22 01:43:25,383 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:43:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:25,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:43:25,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:25,411 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 01:43:25,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:43:25,412 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 01:43:25,412 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 01:43:25,412 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-06-22 01:43:25,431 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 9 states and 13 transitions. Complement of second has 4 states. [2020-06-22 01:43:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 01:43:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 01:43:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 01:43:25,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 01:43:25,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-22 01:43:25,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-22 01:43:25,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,435 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-06-22 01:43:25,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:43:25,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-06-22 01:43:25,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 01:43:25,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 01:43:25,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-22 01:43:25,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 01:43:25,437 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-22 01:43:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-22 01:43:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-06-22 01:43:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 01:43:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-06-22 01:43:25,439 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 01:43:25,439 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 01:43:25,439 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 01:43:25,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-06-22 01:43:25,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:43:25,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:25,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:25,440 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:43:25,440 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 01:43:25,440 INFO L794 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~a~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0] 92#L19-2 [2020-06-22 01:43:25,441 INFO L796 eck$LassoCheckResult]: Loop: 92#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 94#L19 [29] L19-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~b~0_7 (+ (* (- 1) v_ULTIMATE.start_main_~b~0_8) (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 92#L19-2 [2020-06-22 01:43:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 2 times [2020-06-22 01:43:25,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:25,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1858, now seen corresponding path program 1 times [2020-06-22 01:43:25,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:25,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash 54713, now seen corresponding path program 2 times [2020-06-22 01:43:25,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:25,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,485 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:25,485 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:25,485 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:25,485 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:25,485 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:43:25,486 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,486 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:25,486 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:25,486 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 01:43:25,486 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:25,486 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:25,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,568 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:25,568 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,573 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:43:25,606 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:25,638 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:43:25,640 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:25,641 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:25,641 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:25,641 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:25,641 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:43:25,641 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:43:25,641 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:25,641 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:25,642 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 01:43:25,642 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:25,642 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:25,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,720 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:25,720 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:43:25,720 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 [2020-06-22 01:43:25,721 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:25,721 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:43:25,721 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:25,722 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:25,722 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:25,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:43:25,722 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:43:25,728 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:43:25,734 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 01:43:25,734 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 01:43:25,735 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:43:25,735 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:43:25,735 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:43:25,735 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0) = 2*ULTIMATE.start_main_~b~0 + 1 Supporting invariants [] [2020-06-22 01:43:25,736 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:43:25,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:25,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:43:25,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:25,779 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 01:43:25,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:43:25,781 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 01:43:25,781 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 01:43:25,781 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-22 01:43:25,795 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-06-22 01:43:25,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 01:43:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 01:43:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 01:43:25,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 01:43:25,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 01:43:25,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 01:43:25,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:25,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-06-22 01:43:25,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:43:25,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-06-22 01:43:25,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 01:43:25,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 01:43:25,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-22 01:43:25,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 01:43:25,801 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-22 01:43:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-22 01:43:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-06-22 01:43:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 01:43:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-06-22 01:43:25,802 INFO L729 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 01:43:25,803 INFO L609 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 01:43:25,803 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 01:43:25,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-06-22 01:43:25,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:43:25,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:25,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:25,806 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-06-22 01:43:25,806 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 01:43:25,806 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~a~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0] 136#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 138#L19 [34] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_9 (- v_ULTIMATE.start_main_~b~0_10)) (> 0 v_ULTIMATE.start_main_~b~0_10)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 142#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 140#L19 [2020-06-22 01:43:25,807 INFO L796 eck$LassoCheckResult]: Loop: 140#L19 [29] L19-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~b~0_7 (+ (* (- 1) v_ULTIMATE.start_main_~b~0_8) (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 141#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 140#L19 [2020-06-22 01:43:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1696286, now seen corresponding path program 2 times [2020-06-22 01:43:25,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:25,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1888, now seen corresponding path program 2 times [2020-06-22 01:43:25,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1630131773, now seen corresponding path program 2 times [2020-06-22 01:43:25,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:25,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:25,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:25,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:25,856 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:25,856 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:25,857 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:25,857 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:25,857 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:43:25,857 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,857 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:25,857 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:25,857 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 01:43:25,857 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:25,858 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:25,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:25,930 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:25,930 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,936 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,936 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:25,965 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:25,965 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:25,971 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:25,971 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,005 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:43:26,005 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:26,037 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:43:26,039 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:26,039 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:26,039 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:26,039 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:26,039 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:43:26,039 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:43:26,039 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:26,039 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:26,040 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 01:43:26,040 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:26,040 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:26,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,101 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:26,102 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:43:26,102 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 [2020-06-22 01:43:26,103 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:26,103 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:26,103 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:26,104 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:26,105 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:26,105 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:26,109 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:26,110 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 [2020-06-22 01:43:26,110 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:26,110 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:43:26,110 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:26,111 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:26,111 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:26,111 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:43:26,112 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:43:26,117 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:43:26,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 01:43:26,120 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 01:43:26,120 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:43:26,120 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:43:26,121 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:43:26,121 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0) = 2*ULTIMATE.start_main_~a~0 + 1 Supporting invariants [] [2020-06-22 01:43:26,121 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:43:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:26,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:43:26,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:26,162 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 01:43:26,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:43:26,196 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 01:43:26,196 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-22 01:43:26,196 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-06-22 01:43:26,233 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 33 states and 49 transitions. Complement of second has 13 states. [2020-06-22 01:43:26,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-06-22 01:43:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 01:43:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2020-06-22 01:43:26,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-22 01:43:26,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 6 letters. Loop has 2 letters. [2020-06-22 01:43:26,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 01:43:26,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2020-06-22 01:43:26,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:43:26,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 11 states and 14 transitions. [2020-06-22 01:43:26,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-22 01:43:26,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-06-22 01:43:26,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-06-22 01:43:26,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 01:43:26,241 INFO L706 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-06-22 01:43:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-06-22 01:43:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2020-06-22 01:43:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 01:43:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-06-22 01:43:26,242 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-06-22 01:43:26,242 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-06-22 01:43:26,242 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 01:43:26,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-06-22 01:43:26,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:43:26,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:43:26,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:43:26,243 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-06-22 01:43:26,243 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-06-22 01:43:26,244 INFO L794 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~a~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_1, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~b~0] 230#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 232#L19 [34] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_9 (- v_ULTIMATE.start_main_~b~0_10)) (> 0 v_ULTIMATE.start_main_~b~0_10)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 235#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 234#L19 [2020-06-22 01:43:26,244 INFO L796 eck$LassoCheckResult]: Loop: 234#L19 [29] L19-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~b~0_8) (= v_ULTIMATE.start_main_~b~0_7 (+ (* (- 1) v_ULTIMATE.start_main_~b~0_8) (- 1)))) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 233#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 232#L19 [34] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~b~0_9 (- v_ULTIMATE.start_main_~b~0_10)) (> 0 v_ULTIMATE.start_main_~b~0_10)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_10} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~b~0] 235#L19-2 [28] L19-2-->L19: Formula: (and (= v_ULTIMATE.start_main_~a~0_7 (+ v_ULTIMATE.start_main_~b~0_6 v_ULTIMATE.start_main_~a~0_8)) (<= 0 v_ULTIMATE.start_main_~a~0_8)) InVars {ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_8} OutVars{ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~a~0] 234#L19 [2020-06-22 01:43:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1696286, now seen corresponding path program 3 times [2020-06-22 01:43:26,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:26,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:26,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:26,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:26,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1815450, now seen corresponding path program 1 times [2020-06-22 01:43:26,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:26,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:26,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:43:26,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1106428105, now seen corresponding path program 3 times [2020-06-22 01:43:26,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:43:26,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:43:26,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:43:26,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:43:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,335 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:26,336 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:26,336 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:26,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:26,336 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:43:26,336 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,336 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:26,336 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:26,336 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 01:43:26,336 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:26,337 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:26,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,405 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:26,406 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:26,410 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:26,438 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:26,438 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,444 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:26,444 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:26,471 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:43:26,472 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,476 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:43:26,476 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -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:4560 -smt2 -in -t:12000 [2020-06-22 01:43:26,506 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:43:26,506 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:43:26,736 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:43:26,739 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:43:26,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:43:26,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:43:26,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:43:26,739 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:43:26,739 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:43:26,739 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:43:26,740 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:43:26,740 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 01:43:26,740 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:43:26,740 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:43:26,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 01:43:26,795 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:43:26,795 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:43:26,795 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 [2020-06-22 01:43:26,796 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:26,796 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:26,796 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:26,796 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:26,798 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:26,798 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:26,801 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:26,801 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 [2020-06-22 01:43:26,801 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:26,802 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:26,802 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:26,802 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:26,803 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:43:26,803 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:43:26,807 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:43:26,808 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 [2020-06-22 01:43:26,808 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:43:26,808 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:43:26,808 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:43:26,809 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:43:26,809 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:43:26,809 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:43:26,809 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:43:26,813 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:43:26,818 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 01:43:26,818 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 01:43:26,818 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:43:26,818 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:43:26,819 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:43:26,819 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~a~0) = -1*ULTIMATE.start_main_~b~0 + 1*ULTIMATE.start_main_~a~0 Supporting invariants [] [2020-06-22 01:43:26,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:43:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:43:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:26,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:43:26,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:43:26,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 01:43:26,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:43:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 01:43:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,863 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-06-22 01:43:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:43:26,867 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-06-22 01:43:26,867 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 01:43:26,867 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 [2020-06-22 01:43:26,867 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-06-22 01:43:26,898 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 18 states and 24 transitions. Complement of second has 8 states. [2020-06-22 01:43:26,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-06-22 01:43:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 01:43:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-06-22 01:43:26,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 01:43:26,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 4 letters. [2020-06-22 01:43:26,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 8 letters. [2020-06-22 01:43:26,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:43:26,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-06-22 01:43:26,903 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 01:43:26,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 01:43:26,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 01:43:26,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:43:26,904 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 01:43:26,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 01:43:26,904 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 01:43:26,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 01:43:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:43:26 BasicIcfg [2020-06-22 01:43:26,910 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 01:43:26,911 INFO L168 Benchmark]: Toolchain (without parser) took 3474.01 ms. Allocated memory was 649.6 MB in the beginning and 763.9 MB in the end (delta: 114.3 MB). Free memory was 559.8 MB in the beginning and 636.5 MB in the end (delta: -76.7 MB). Peak memory consumption was 37.6 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,913 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 580.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 01:43:26,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.60 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 559.8 MB in the beginning and 661.4 MB in the end (delta: -101.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.57 ms. Allocated memory is still 693.6 MB. Free memory was 660.0 MB in the beginning and 656.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,915 INFO L168 Benchmark]: Boogie Preprocessor took 18.29 ms. Allocated memory is still 693.6 MB. Free memory was 656.9 MB in the beginning and 655.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,915 INFO L168 Benchmark]: RCFGBuilder took 191.45 ms. Allocated memory is still 693.6 MB. Free memory was 655.6 MB in the beginning and 643.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,916 INFO L168 Benchmark]: BlockEncodingV2 took 67.31 ms. Allocated memory is still 693.6 MB. Free memory was 643.9 MB in the beginning and 637.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,916 INFO L168 Benchmark]: TraceAbstraction took 149.70 ms. Allocated memory is still 693.6 MB. Free memory was 637.4 MB in the beginning and 627.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,917 INFO L168 Benchmark]: BuchiAutomizer took 2735.02 ms. Allocated memory was 693.6 MB in the beginning and 763.9 MB in the end (delta: 70.3 MB). Free memory was 627.9 MB in the beginning and 636.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 50.3 GB. [2020-06-22 01:43:26,921 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 580.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 274.60 ms. Allocated memory was 649.6 MB in the beginning and 693.6 MB in the end (delta: 44.0 MB). Free memory was 559.8 MB in the beginning and 661.4 MB in the end (delta: -101.6 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.57 ms. Allocated memory is still 693.6 MB. Free memory was 660.0 MB in the beginning and 656.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.29 ms. Allocated memory is still 693.6 MB. Free memory was 656.9 MB in the beginning and 655.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 191.45 ms. Allocated memory is still 693.6 MB. Free memory was 655.6 MB in the beginning and 643.9 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 67.31 ms. Allocated memory is still 693.6 MB. Free memory was 643.9 MB in the beginning and 637.4 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 149.70 ms. Allocated memory is still 693.6 MB. Free memory was 637.4 MB in the beginning and 627.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2735.02 ms. Allocated memory was 693.6 MB in the beginning and 763.9 MB in the end (delta: 70.3 MB). Free memory was 627.9 MB in the beginning and 636.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (0 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function -1 * b and consists of 3 locations. One nondeterministic module has affine ranking function -1 * b and consists of 3 locations. One nondeterministic module has affine ranking function 2 * b + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * a + 1 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * b + a and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 16 SDtfs, 26 SDslu, 2 SDs, 0 SdLazy, 49 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf93 smp100 dnf100 smp100 tf106 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 01:43:27.150 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check