/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:58:51,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:58:51,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:58:51,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:58:51,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:58:51,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:58:51,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:58:51,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:58:51,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:58:51,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:58:51,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:58:51,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:58:51,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:58:51,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:58:51,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:58:51,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:58:51,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:58:51,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:58:51,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:58:51,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:58:51,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:58:51,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:58:51,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:58:51,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:58:51,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:58:51,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:58:51,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:58:51,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:58:51,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:58:51,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:58:51,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:58:51,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:58:51,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:58:51,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:58:51,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:58:51,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:58:51,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:58:51,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:58:51,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:58:51,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:58:51,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:58:51,569 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:58:51,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:58:51,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:58:51,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:58:51,585 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:58:51,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:58:51,586 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:58:51,586 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:58:51,586 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:58:51,586 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:58:51,586 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:58:51,587 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:58:51,587 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:58:51,587 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:58:51,587 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:58:51,587 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:58:51,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:58:51,588 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:58:51,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:58:51,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:58:51,588 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:58:51,588 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:58:51,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:58:51,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:58:51,589 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:58:51,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:58:51,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:58:51,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:58:51,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:58:51,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:58:51,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:58:51,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:58:51,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:58:51,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:58:51,774 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:58:51,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:58:51,846 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_N5XuVC/tmp/43e33c401bd1453691ee2777683cf8af/FLAG286ee1413 [2020-07-01 10:58:52,201 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:58:52,202 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:58:52,209 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_N5XuVC/tmp/43e33c401bd1453691ee2777683cf8af/FLAG286ee1413 [2020-07-01 10:58:52,697 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_N5XuVC/tmp/43e33c401bd1453691ee2777683cf8af [2020-07-01 10:58:52,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:58:52,710 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:58:52,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:58:52,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:58:52,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:58:52,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:52,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59230eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52, skipping insertion in model container [2020-07-01 10:58:52,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:52,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:58:52,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:58:52,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:58:52,957 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:58:52,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:58:52,986 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:58:52,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52 WrapperNode [2020-07-01 10:58:52,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:58:52,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:58:52,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:58:52,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:58:52,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:58:53,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:58:53,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:58:53,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:58:53,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (1/1) ... [2020-07-01 10:58:53,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:58:53,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:58:53,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:58:53,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:58:53,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (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 [2020-07-01 10:58:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:58:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:58:53,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:58:53,250 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:58:53,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:58:53 BoogieIcfgContainer [2020-07-01 10:58:53,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:58:53,254 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:58:53,254 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:58:53,256 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:58:53,257 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:58:53" (1/1) ... [2020-07-01 10:58:53,270 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 10:58:53,272 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:58:53,272 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:58:53,273 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:58:53,273 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:58:53,275 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:58:53,276 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:58:53,276 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:58:53,289 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:58:53,297 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 10:58:53,302 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:58:53,303 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:58:53,314 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:58:53,316 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 10:58:53,317 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:58:53,317 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:58:53,323 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 10:58:53,324 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:58:53,324 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:58:53,324 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:58:53,325 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:58:53,325 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:58:53,325 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 10:58:53,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:58:53 BasicIcfg [2020-07-01 10:58:53,326 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:58:53,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:58:53,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:58:53,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:58:53,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:58:52" (1/4) ... [2020-07-01 10:58:53,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f1e507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (2/4) ... [2020-07-01 10:58:53,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f1e507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:58:53" (3/4) ... [2020-07-01 10:58:53,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f1e507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:58:53" (4/4) ... [2020-07-01 10:58:53,335 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:58:53,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:58:53,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:58:53,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:58:53,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:58:53,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:58:53,389 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:58:53,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:58:53,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:58:53,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:58:53,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:58:53,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:58:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 10:58:53,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:58:53,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 10:58:53,462 INFO L271 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: true [2020-07-01 10:58:53,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:58:53,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:58:53 BasicIcfg [2020-07-01 10:58:53,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:58:53,471 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:58:53,471 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:58:53,474 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:58:53,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:58:53,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:58:52" (1/5) ... [2020-07-01 10:58:53,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1028425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:58:53,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:58:52" (2/5) ... [2020-07-01 10:58:53,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1028425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:58:53,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:58:53" (3/5) ... [2020-07-01 10:58:53,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1028425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:58:53,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:58:53" (4/5) ... [2020-07-01 10:58:53,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1028425c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:58:53, skipping insertion in model container [2020-07-01 10:58:53,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:58:53,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:58:53" (5/5) ... [2020-07-01 10:58:53,480 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:58:53,508 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:58:53,509 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:58:53,509 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:58:53,509 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:58:53,509 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:58:53,509 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:58:53,509 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:58:53,509 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:58:53,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:58:53,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:58:53,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:58:53,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:58:53,535 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:58:53,535 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:58:53,535 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:58:53,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:58:53,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:58:53,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:58:53,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:58:53,536 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:58:53,536 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:58:53,541 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L17-2: Formula: (<= v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_11) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 10:58:53,541 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [26] L17-2-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_9 (+ v_ULTIMATE.start_main_~x~0_10 (* v_ULTIMATE.start_main_~y~0_8 (- 1)))) (<= 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 10:58:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:58:53,548 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 10:58:53,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:58:53,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636770645] [2020-07-01 10:58:53,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:58:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,629 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:58:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:58:53,630 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-07-01 10:58:53,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:58:53,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888761376] [2020-07-01 10:58:53,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:58:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,639 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:58:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:58:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2134, now seen corresponding path program 1 times [2020-07-01 10:58:53,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:58:53,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875990643] [2020-07-01 10:58:53,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:58:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:58:53,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:58:53,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:58:53 BasicIcfg [2020-07-01 10:58:53,719 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:58:53,722 INFO L168 Benchmark]: Toolchain (without parser) took 1011.14 ms. Allocated memory was 514.9 MB in the beginning and 557.8 MB in the end (delta: 43.0 MB). Free memory was 438.9 MB in the beginning and 478.8 MB in the end (delta: -39.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,722 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:58:53,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.84 ms. Allocated memory was 514.9 MB in the beginning and 557.8 MB in the end (delta: 43.0 MB). Free memory was 438.9 MB in the beginning and 526.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 557.8 MB. Free memory was 525.9 MB in the beginning and 524.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,725 INFO L168 Benchmark]: Boogie Preprocessor took 19.97 ms. Allocated memory is still 557.8 MB. Free memory was 524.6 MB in the beginning and 523.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,725 INFO L168 Benchmark]: RCFGBuilder took 210.69 ms. Allocated memory is still 557.8 MB. Free memory was 523.2 MB in the beginning and 511.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,726 INFO L168 Benchmark]: BlockEncodingV2 took 71.82 ms. Allocated memory is still 557.8 MB. Free memory was 511.2 MB in the beginning and 506.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,727 INFO L168 Benchmark]: TraceAbstraction took 143.51 ms. Allocated memory is still 557.8 MB. Free memory was 505.8 MB in the beginning and 497.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,727 INFO L168 Benchmark]: BuchiAutomizer took 248.10 ms. Allocated memory is still 557.8 MB. Free memory was 497.0 MB in the beginning and 478.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:58:53,732 INFO L336 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 2 locations, 2 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 275.84 ms. Allocated memory was 514.9 MB in the beginning and 557.8 MB in the end (delta: 43.0 MB). Free memory was 438.9 MB in the beginning and 526.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 557.8 MB. Free memory was 525.9 MB in the beginning and 524.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.97 ms. Allocated memory is still 557.8 MB. Free memory was 524.6 MB in the beginning and 523.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 210.69 ms. Allocated memory is still 557.8 MB. Free memory was 523.2 MB in the beginning and 511.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.82 ms. Allocated memory is still 557.8 MB. Free memory was 511.2 MB in the beginning and 506.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 143.51 ms. Allocated memory is still 557.8 MB. Free memory was 505.8 MB in the beginning and 497.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 248.10 ms. Allocated memory is still 557.8 MB. Free memory was 497.0 MB in the beginning and 478.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 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, 2 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, 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 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 0.2s 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: 17]: 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@2d30a42=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@294074e5=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y <= x Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:58:49.366 ----------------------------------------------- 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/BenchExec_run_N5XuVC/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:58:53.970 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check