NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 22:28:10,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 22:28:10,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 22:28:10,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 22:28:10,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 22:28:10,681 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 22:28:10,682 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 22:28:10,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 22:28:10,685 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 22:28:10,686 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 22:28:10,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 22:28:10,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 22:28:10,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 22:28:10,689 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 22:28:10,690 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 22:28:10,691 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 22:28:10,691 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 22:28:10,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 22:28:10,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 22:28:10,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 22:28:10,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 22:28:10,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 22:28:10,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 22:28:10,701 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 22:28:10,701 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 22:28:10,702 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 22:28:10,702 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 22:28:10,703 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 22:28:10,703 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 22:28:10,704 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 22:28:10,704 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 22:28:10,705 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 22:28:10,706 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 22:28:10,706 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 22:28:10,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 22:28:10,707 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 22:28:10,707 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 22:28:10,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 22:28:10,709 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 22:28:10,709 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-21 22:28:10,723 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 22:28:10,724 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 22:28:10,725 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 22:28:10,725 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 22:28:10,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 22:28:10,725 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:28:10,725 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 22:28:10,726 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 22:28:10,726 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 22:28:10,727 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:28:10,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 22:28:10,727 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 22:28:10,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 22:28:10,727 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 22:28:10,727 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 22:28:10,728 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 22:28:10,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 22:28:10,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 22:28:10,728 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 22:28:10,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 22:28:10,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 22:28:10,729 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 22:28:10,729 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 22:28:10,729 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 22:28:10,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 22:28:10,769 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 22:28:10,772 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 22:28:10,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 22:28:10,774 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 22:28:10,775 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 22:28:10,843 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/0575a4c68eea47e5a3515bbd0eddd4ef/FLAG3b8920788 !SESSION 2020-06-21 22:28:08.354 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-21 22:28:11.119 !MESSAGE Indexed 'FLAG3b8920788' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-21 22:28:11,183 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 22:28:11,184 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 22:28:11,191 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/0575a4c68eea47e5a3515bbd0eddd4ef/FLAG3b8920788 [2020-06-21 22:28:11,649 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/0575a4c68eea47e5a3515bbd0eddd4ef [2020-06-21 22:28:11,660 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 22:28:11,662 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 22:28:11,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 22:28:11,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 22:28:11,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 22:28:11,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686327a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11, skipping insertion in model container [2020-06-21 22:28:11,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 22:28:11,696 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 22:28:11,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:28:11,852 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 22:28:11,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:28:11,933 INFO L195 MainTranslator]: Completed translation [2020-06-21 22:28:11,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11 WrapperNode [2020-06-21 22:28:11,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 22:28:11,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 22:28:11,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 22:28:11,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 22:28:11,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 22:28:11,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 22:28:11,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 22:28:11,968 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 22:28:11,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... [2020-06-21 22:28:11,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 22:28:11,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 22:28:11,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 22:28:11,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 22:28:11,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 [2020-06-21 22:28:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 22:28:12,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 22:28:12,166 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 22:28:12,166 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 22:28:12,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:12 BoogieIcfgContainer [2020-06-21 22:28:12,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 22:28:12,168 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 22:28:12,168 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 22:28:12,170 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 22:28:12,171 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:12" (1/1) ... [2020-06-21 22:28:12,185 INFO L313 BlockEncoder]: Initial Icfg 5 locations, 6 edges [2020-06-21 22:28:12,186 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 22:28:12,187 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 22:28:12,187 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 22:28:12,188 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:28:12,189 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 22:28:12,190 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 22:28:12,191 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 22:28:12,203 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 22:28:12,210 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 22:28:12,215 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 22:28:12,217 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:28:12,228 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 22:28:12,230 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 22:28:12,231 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:28:12,231 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:28:12,231 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 22:28:12,232 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:28:12,232 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-06-21 22:28:12,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:12 BasicIcfg [2020-06-21 22:28:12,233 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 22:28:12,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 22:28:12,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 22:28:12,237 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 22:28:12,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:28:11" (1/4) ... [2020-06-21 22:28:12,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23318a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (2/4) ... [2020-06-21 22:28:12,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23318a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:12" (3/4) ... [2020-06-21 22:28:12,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23318a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:12" (4/4) ... [2020-06-21 22:28:12,241 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:28:12,251 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 22:28:12,258 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 22:28:12,275 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 22:28:12,303 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:28:12,304 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 22:28:12,304 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 22:28:12,304 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:28:12,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:28:12,304 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:28:12,304 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 22:28:12,305 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:28:12,305 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 22:28:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-21 22:28:12,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 22:28:12,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-21 22:28:12,376 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 22:28:12,376 INFO L451 ceAbstractionStarter]: At program point L14-2(lines 14 16) the Hoare annotation is: true [2020-06-21 22:28:12,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:12 BasicIcfg [2020-06-21 22:28:12,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 22:28:12,384 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 22:28:12,385 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 22:28:12,388 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 22:28:12,389 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:12,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 10:28:11" (1/5) ... [2020-06-21 22:28:12,389 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3051961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,389 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:12,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:11" (2/5) ... [2020-06-21 22:28:12,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3051961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,390 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:12,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:12" (3/5) ... [2020-06-21 22:28:12,391 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3051961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,391 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:12,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:12" (4/5) ... [2020-06-21 22:28:12,391 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3051961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:12, skipping insertion in model container [2020-06-21 22:28:12,392 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:12,392 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:12" (5/5) ... [2020-06-21 22:28:12,393 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:28:12,420 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:28:12,420 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 22:28:12,421 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 22:28:12,421 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:28:12,421 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:28:12,421 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:28:12,421 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 22:28:12,422 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:28:12,422 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 22:28:12,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:28:12,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:28:12,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:28:12,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:28:12,447 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:28:12,447 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:28:12,447 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 22:28:12,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:28:12,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:28:12,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:28:12,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:28:12,448 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:28:12,448 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:28:12,453 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [17] ULTIMATE.startENTRY-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~c~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 4#L14-2true [2020-06-21 22:28:12,454 INFO L796 eck$LassoCheckResult]: Loop: 4#L14-2true [20] L14-2-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_5 (+ v_ULTIMATE.start_main_~x~0_6 v_ULTIMATE.start_main_~c~0_4)) (<= 0 v_ULTIMATE.start_main_~x~0_6)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 4#L14-2true [2020-06-21 22:28:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:12,460 INFO L82 PathProgramCache]: Analyzing trace with hash 48, now seen corresponding path program 1 times [2020-06-21 22:28:12,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:12,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:12,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:12,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:12,523 INFO L82 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2020-06-21 22:28:12,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:12,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:12,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:12,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1508, now seen corresponding path program 1 times [2020-06-21 22:28:12,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:12,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:12,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:12,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:12,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:12 BasicIcfg [2020-06-21 22:28:12,617 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 22:28:12,618 INFO L168 Benchmark]: Toolchain (without parser) took 957.07 ms. Allocated memory was 649.6 MB in the beginning and 673.7 MB in the end (delta: 24.1 MB). Free memory was 566.6 MB in the beginning and 591.4 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:28:12,620 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:28:12,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.60 ms. Allocated memory was 649.6 MB in the beginning and 673.7 MB in the end (delta: 24.1 MB). Free memory was 565.2 MB in the beginning and 641.2 MB in the end (delta: -76.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 673.7 MB. Free memory was 641.2 MB in the beginning and 639.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,623 INFO L168 Benchmark]: Boogie Preprocessor took 17.95 ms. Allocated memory is still 673.7 MB. Free memory was 639.8 MB in the beginning and 636.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,624 INFO L168 Benchmark]: RCFGBuilder took 181.91 ms. Allocated memory is still 673.7 MB. Free memory was 636.7 MB in the beginning and 625.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,625 INFO L168 Benchmark]: BlockEncodingV2 took 64.77 ms. Allocated memory is still 673.7 MB. Free memory was 625.2 MB in the beginning and 619.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,626 INFO L168 Benchmark]: TraceAbstraction took 150.15 ms. Allocated memory is still 673.7 MB. Free memory was 619.8 MB in the beginning and 611.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,627 INFO L168 Benchmark]: BuchiAutomizer took 233.36 ms. Allocated memory is still 673.7 MB. Free memory was 611.7 MB in the beginning and 591.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:12,634 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 5 locations, 6 edges - StatisticsResult: Encoded RCFG 2 locations, 2 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 270.60 ms. Allocated memory was 649.6 MB in the beginning and 673.7 MB in the end (delta: 24.1 MB). Free memory was 565.2 MB in the beginning and 641.2 MB in the end (delta: -76.0 MB). Peak memory consumption was 30.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 673.7 MB. Free memory was 641.2 MB in the beginning and 639.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 17.95 ms. Allocated memory is still 673.7 MB. Free memory was 639.8 MB in the beginning and 636.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 181.91 ms. Allocated memory is still 673.7 MB. Free memory was 636.7 MB in the beginning and 625.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 64.77 ms. Allocated memory is still 673.7 MB. Free memory was 625.2 MB in the beginning and 619.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.15 ms. Allocated memory is still 673.7 MB. Free memory was 619.8 MB in the beginning and 611.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 233.36 ms. Allocated memory is still 673.7 MB. Free memory was 611.7 MB in the beginning and 591.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 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: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 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=2occurred 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73dafe2d=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449390ba=0, c=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c = __VERIFIER_nondet_int(); [L13] int x = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE x >= 0 [L15] x += c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 22:28:12.871 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check