/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:38:06,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:38:06,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:38:06,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:38:06,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:38:06,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:38:06,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:38:06,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:38:06,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:38:06,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:38:06,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:38:06,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:38:06,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:38:06,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:38:06,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:38:06,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:38:06,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:38:06,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:38:06,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:38:06,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:38:06,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:38:06,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:38:06,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:38:06,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:38:06,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:38:06,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:38:06,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:38:06,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:38:06,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:38:06,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:38:06,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:38:06,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:38:06,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:38:06,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:38:06,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:38:06,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:38:06,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:38:06,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:38:06,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:38:06,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:38:06,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:38:06,611 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:38:06,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:38:06,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:38:06,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:38:06,627 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:38:06,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:38:06,627 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:38:06,627 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:38:06,628 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:38:06,628 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:38:06,628 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:38:06,628 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:38:06,628 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:38:06,629 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:38:06,629 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:38:06,629 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:38:06,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:38:06,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:38:06,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:38:06,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:38:06,630 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:38:06,630 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:38:06,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:38:06,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:38:06,631 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:38:06,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:38:06,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:38:06,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:38:06,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:38:06,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:38:06,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:38:06,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:38:06,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:38:06,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:38:06,819 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:38:06,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:38:06,891 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ZIkMAl/tmp/b571ceb20bb54cddb1244733a027d603/FLAGe93c7484e [2020-07-01 12:38:07,216 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:38:07,217 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:38:07,223 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ZIkMAl/tmp/b571ceb20bb54cddb1244733a027d603/FLAGe93c7484e [2020-07-01 12:38:07,794 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_ZIkMAl/tmp/b571ceb20bb54cddb1244733a027d603 [2020-07-01 12:38:07,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:38:07,807 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:38:07,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:38:07,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:38:07,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:38:07,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:38:07" (1/1) ... [2020-07-01 12:38:07,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c7bffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:07, skipping insertion in model container [2020-07-01 12:38:07,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:38:07" (1/1) ... [2020-07-01 12:38:07,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:38:07,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:38:08,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:38:08,059 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:38:08,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:38:08,088 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:38:08,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08 WrapperNode [2020-07-01 12:38:08,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:38:08,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:38:08,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:38:08,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:38:08,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:38:08,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:38:08,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:38:08,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:38:08,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:38:08,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:38:08,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:38:08,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:38:08,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (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 [2020-07-01 12:38:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:38:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:38:08,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:38:08,363 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:38:08,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:38:08 BoogieIcfgContainer [2020-07-01 12:38:08,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:38:08,367 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:38:08,368 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:38:08,370 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:38:08,371 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:38:08" (1/1) ... [2020-07-01 12:38:08,384 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 12:38:08,385 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:38:08,386 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:38:08,387 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:38:08,387 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:38:08,389 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:38:08,390 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:38:08,390 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:38:08,404 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:38:08,411 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 12:38:08,417 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:38:08,418 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:38:08,430 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 12:38:08,432 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:38:08,433 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:38:08,433 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:38:08,439 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 12:38:08,440 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:38:08,440 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:38:08,440 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:38:08,440 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:38:08,441 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:38:08,441 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 12:38:08,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:38:08 BasicIcfg [2020-07-01 12:38:08,441 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:38:08,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:38:08,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:38:08,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:38:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:38:07" (1/4) ... [2020-07-01 12:38:08,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a9225d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (2/4) ... [2020-07-01 12:38:08,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a9225d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:38:08" (3/4) ... [2020-07-01 12:38:08,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a9225d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:38:08" (4/4) ... [2020-07-01 12:38:08,451 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:38:08,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:38:08,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:38:08,485 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:38:08,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:38:08,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:38:08,510 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:38:08,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:38:08,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:38:08,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:38:08,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:38:08,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:38:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 12:38:08,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:38:08,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 12:38:08,588 INFO L271 CegarLoopResult]: At program point L18-2(lines 18 20) the Hoare annotation is: true [2020-07-01 12:38:08,589 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:38:08,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:38:08 BasicIcfg [2020-07-01 12:38:08,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:38:08,598 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:38:08,598 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:38:08,602 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:38:08,603 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:38:08,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:38:07" (1/5) ... [2020-07-01 12:38:08,604 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36ad1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,604 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:38:08,604 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:38:08" (2/5) ... [2020-07-01 12:38:08,605 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36ad1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:38:08,605 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:38:08" (3/5) ... [2020-07-01 12:38:08,605 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36ad1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,605 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:38:08,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:38:08" (4/5) ... [2020-07-01 12:38:08,606 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36ad1528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:38:08, skipping insertion in model container [2020-07-01 12:38:08,606 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:38:08,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:38:08" (5/5) ... [2020-07-01 12:38:08,608 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:38:08,638 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:38:08,638 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:38:08,638 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:38:08,638 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:38:08,638 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:38:08,639 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:38:08,639 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:38:08,639 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:38:08,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 12:38:08,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:38:08,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:38:08,659 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:38:08,664 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:38:08,664 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:38:08,664 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:38:08,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 12:38:08,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 12:38:08,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:38:08,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:38:08,665 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:38:08,665 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:38:08,670 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L18-2: Formula: (<= 5 v_ULTIMATE.start_main_~y~0_10) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L18-2true [2020-07-01 12:38:08,670 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-2true [27] L18-2-->L18-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_7) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 4#L18-2true [2020-07-01 12:38:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:38:08,677 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 12:38:08,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:38:08,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162692495] [2020-07-01 12:38:08,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:38:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:38:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:38:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-07-01 12:38:08,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:38:08,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631182343] [2020-07-01 12:38:08,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:38:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:38:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:38:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2135, now seen corresponding path program 1 times [2020-07-01 12:38:08,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:38:08,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829090716] [2020-07-01 12:38:08,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:38:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:38:08,782 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:38:08,818 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:38:08,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:38:08,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:38:08,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:38:08,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:38:08,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:38:08,820 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:38:08,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:38:08,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:38:08,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:38:08,820 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:38:08,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:08,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:08,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:08,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:08,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:38:08,945 INFO L404 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 [2020-07-01 12:38:08,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:08,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:08,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:08,964 INFO L440 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 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 [2020-07-01 12:38:08,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:08,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,003 INFO L440 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 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 [2020-07-01 12:38:09,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,036 INFO L160 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 [2020-07-01 12:38:09,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:38:09,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=7}, {ULTIMATE.start_main_~y~0=-8}] Lambdas: [10, 1, 1] Nus: [0, 0] 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 [2020-07-01 12:38:09,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:38:09,164 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:38:09,164 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:38:09,164 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:38:09,164 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:38:09,165 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:38:09,165 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:38:09,165 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:38:09,165 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:38:09,165 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Lasso [2020-07-01 12:38:09,165 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:38:09,165 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:38:09,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:38:09,280 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:38:09,281 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-07-01 12:38:09,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,298 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} 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 [2020-07-01 12:38:09,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 12:38:09,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,373 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_2=0} Honda state: {v_rep~unnamed0~0~false_2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 12:38:09,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,426 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,426 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 12:38:09,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,462 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 12:38:09,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,494 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-01 12:38:09,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:38:09,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,547 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=5}, {ULTIMATE.start_main_~y~0=-7}, {ULTIMATE.start_main_~y~0=1}] Lambdas: [1, 1, 1] Nus: [0, 0] 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 [2020-07-01 12:38:09,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:38:09,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:38:09,584 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:38:09,584 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_2=1} Honda state: {v_rep~unnamed0~0~true_2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:38:09,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,626 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,627 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,627 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,628 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:38:09 BasicIcfg [2020-07-01 12:38:09,638 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:38:09,641 INFO L168 Benchmark]: Toolchain (without parser) took 1832.60 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 562.8 MB in the beginning and 531.6 MB in the end (delta: 31.2 MB). Peak memory consumption was 72.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,641 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:38:09,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.76 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 562.8 MB in the beginning and 655.5 MB in the end (delta: -92.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 690.5 MB. Free memory was 655.5 MB in the beginning and 653.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,643 INFO L168 Benchmark]: Boogie Preprocessor took 19.18 ms. Allocated memory is still 690.5 MB. Free memory was 653.2 MB in the beginning and 652.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,644 INFO L168 Benchmark]: RCFGBuilder took 224.32 ms. Allocated memory is still 690.5 MB. Free memory was 652.1 MB in the beginning and 637.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,644 INFO L168 Benchmark]: BlockEncodingV2 took 74.18 ms. Allocated memory is still 690.5 MB. Free memory was 637.5 MB in the beginning and 632.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,645 INFO L168 Benchmark]: TraceAbstraction took 154.51 ms. Allocated memory is still 690.5 MB. Free memory was 631.0 MB in the beginning and 623.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,646 INFO L168 Benchmark]: BuchiAutomizer took 1040.25 ms. Allocated memory is still 690.5 MB. Free memory was 623.4 MB in the beginning and 531.6 MB in the end (delta: 91.7 MB). Peak memory consumption was 91.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:38:09,651 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 0.20 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 280.76 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 562.8 MB in the beginning and 655.5 MB in the end (delta: -92.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 690.5 MB. Free memory was 655.5 MB in the beginning and 653.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.18 ms. Allocated memory is still 690.5 MB. Free memory was 653.2 MB in the beginning and 652.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 224.32 ms. Allocated memory is still 690.5 MB. Free memory was 652.1 MB in the beginning and 637.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.18 ms. Allocated memory is still 690.5 MB. Free memory was 637.5 MB in the beginning and 632.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.51 ms. Allocated memory is still 690.5 MB. Free memory was 631.0 MB in the beginning and 623.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1040.25 ms. Allocated memory is still 690.5 MB. Free memory was 623.4 MB in the beginning and 531.6 MB in the end (delta: 91.7 MB). Peak memory consumption was 91.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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: 18]: 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 0.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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: Lassos: inital11 mio100 ax214 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf100 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 18]: Nontermination argument in form of an infinite program execution. [2020-07-01 12:38:09,662 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,662 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,665 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,665 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:38:09,666 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:38:09,666 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3688da89=0, \result=0, ~unnamed0~0~true=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dca0f6e=0, x=0, ~unnamed0~0~false=0, y=0} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3688da89=0, \result=0, ~unnamed0~0~true=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dca0f6e=0, x=0, ~unnamed0~0~false=0, y=5} For i>1, the state at position i is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3688da89=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dca0f6e=0 + sum_{k=0}^i 0, x=0 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, y=5 + sum_{k=0}^i 5 + -7 + 1} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [1, 1, 1] Mus: [0, 0] - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L14] int x, y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE y >= 5 Loop: [L18] COND TRUE x >= 0 [L19] y = y - 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:38:04.383 ----------------------------------------------- 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/BenchExec_run_ZIkMAl/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:38:09.890 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check