/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 11:12:51,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:12:51,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:12:51,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:12:51,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:12:51,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:12:51,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:12:51,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:12:51,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:12:51,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:12:51,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:12:51,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:12:51,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:12:51,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:12:51,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:12:51,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:12:51,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:12:51,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:12:51,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:12:51,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:12:51,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:12:51,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:12:51,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:12:51,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:12:51,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:12:51,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:12:51,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:12:51,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:12:51,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:12:51,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:12:51,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:12:51,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:12:51,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:12:51,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:12:51,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:12:51,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:12:51,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:12:51,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:12:51,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:12:51,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:12:51,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:12:51,058 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:12:51,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:12:51,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:12:51,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:12:51,074 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:12:51,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:12:51,074 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:12:51,075 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:12:51,075 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:12:51,075 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:12:51,075 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:12:51,075 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:12:51,075 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:12:51,076 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:12:51,076 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:12:51,076 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:12:51,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:12:51,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:12:51,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:12:51,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:12:51,077 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:12:51,077 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:12:51,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:12:51,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:12:51,078 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:12:51,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:12:51,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:12:51,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:12:51,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:12:51,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:12:51,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:12:51,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:12:51,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:12:51,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:12:51,267 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:12:51,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:12:51,331 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_ql0Uq8/tmp/21f9cb7a9104418ebc4ad413c62748ce/FLAGae9827e41 [2020-07-01 11:12:51,660 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:12:51,661 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:12:51,667 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_ql0Uq8/tmp/21f9cb7a9104418ebc4ad413c62748ce/FLAGae9827e41 [2020-07-01 11:12:52,061 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_ql0Uq8/tmp/21f9cb7a9104418ebc4ad413c62748ce [2020-07-01 11:12:52,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:12:52,074 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:12:52,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:12:52,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:12:52,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:12:52,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cc7d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:12:52,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:12:52,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:12:52,334 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:12:52,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:12:52,364 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:12:52,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52 WrapperNode [2020-07-01 11:12:52,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:12:52,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:12:52,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:12:52,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:12:52,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:12:52,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:12:52,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:12:52,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:12:52,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:12:52,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:12:52,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:12:52,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:12:52,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (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 11:12:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:12:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:12:52,653 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:12:52,653 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 11:12:52,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:12:52 BoogieIcfgContainer [2020-07-01 11:12:52,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:12:52,657 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:12:52,657 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:12:52,659 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:12:52,660 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:12:52" (1/1) ... [2020-07-01 11:12:52,673 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 13 edges [2020-07-01 11:12:52,674 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:12:52,675 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:12:52,675 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:12:52,676 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:12:52,677 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:12:52,678 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:12:52,678 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:12:52,693 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:12:52,708 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 11:12:52,712 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:12:52,713 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:12:52,731 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 11:12:52,733 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 11:12:52,735 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:12:52,735 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:12:52,739 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:12:52,739 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:12:52,739 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:12:52,740 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:12:52,740 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:12:52,740 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:12:52,740 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 11:12:52,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:12:52 BasicIcfg [2020-07-01 11:12:52,741 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:12:52,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:12:52,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:12:52,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:12:52,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:12:52" (1/4) ... [2020-07-01 11:12:52,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432bbd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (2/4) ... [2020-07-01 11:12:52,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432bbd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:12:52" (3/4) ... [2020-07-01 11:12:52,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432bbd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:12:52" (4/4) ... [2020-07-01 11:12:52,750 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:12:52,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:12:52,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:12:52,781 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:12:52,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:12:52,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:12:52,804 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:12:52,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:12:52,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:12:52,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:12:52,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:12:52,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:12:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:12:52,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:12:52,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:12:52,878 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-01 11:12:52,878 INFO L271 CegarLoopResult]: At program point L17-2(lines 16 22) the Hoare annotation is: true [2020-07-01 11:12:52,879 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:12:52,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:12:52 BasicIcfg [2020-07-01 11:12:52,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:12:52,888 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:12:52,888 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:12:52,892 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:12:52,892 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:12:52,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:12:52" (1/5) ... [2020-07-01 11:12:52,893 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d54676c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:12:52,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:12:52" (2/5) ... [2020-07-01 11:12:52,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d54676c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:12:52,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:12:52" (3/5) ... [2020-07-01 11:12:52,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d54676c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:12:52,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:12:52" (4/5) ... [2020-07-01 11:12:52,895 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d54676c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:12:52, skipping insertion in model container [2020-07-01 11:12:52,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:12:52,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:12:52" (5/5) ... [2020-07-01 11:12:52,897 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:12:52,925 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:12:52,926 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:12:52,926 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:12:52,926 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:12:52,926 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:12:52,926 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:12:52,926 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:12:52,927 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:12:52,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:12:52,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:12:52,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:12:52,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:12:52,953 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:12:52,953 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:12:52,954 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:12:52,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:12:52,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:12:52,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:12:52,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:12:52,955 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:12:52,955 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:12:52,960 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [57] ULTIMATE.startENTRY-->L17-2: Formula: (and (= |v_ULTIMATE.start_gcd_#in~y1_2| v_ULTIMATE.start_main_~y1~0_6) (<= 0 v_ULTIMATE.start_main_~y2~0_6) (= |v_ULTIMATE.start_gcd_#in~y2_2| v_ULTIMATE.start_gcd_~y2_10) (= |v_ULTIMATE.start_gcd_#in~y2_2| v_ULTIMATE.start_main_~y2~0_6) (<= 0 v_ULTIMATE.start_main_~y1~0_6) (= |v_ULTIMATE.start_gcd_#in~y1_2| v_ULTIMATE.start_gcd_~y1_11)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_5|, ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_10, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_11, ULTIMATE.start_gcd_#in~y2=|v_ULTIMATE.start_gcd_#in~y2_2|, ULTIMATE.start_gcd_#in~y1=|v_ULTIMATE.start_gcd_#in~y1_2|, ULTIMATE.start_gcd_#res=|v_ULTIMATE.start_gcd_#res_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_6, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_gcd_~y2, ULTIMATE.start_gcd_~y1, ULTIMATE.start_gcd_#in~y2, ULTIMATE.start_gcd_#in~y1, ULTIMATE.start_gcd_#res, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 3#L17-2true [2020-07-01 11:12:52,960 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [51] L17-2-->L17: Formula: (> v_ULTIMATE.start_gcd_~y2_4 v_ULTIMATE.start_gcd_~y1_4) InVars {ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_4, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_4} OutVars{ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_4, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_4} AuxVars[] AssignedVars[] 5#L17true [48] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_gcd_~y2_6 (+ (* v_ULTIMATE.start_gcd_~y1_7 (- 1)) v_ULTIMATE.start_gcd_~y2_7)) (>= v_ULTIMATE.start_gcd_~y2_7 v_ULTIMATE.start_gcd_~y1_7)) InVars {ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_7, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_7} OutVars{ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_6, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_7} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~y2] 3#L17-2true [2020-07-01 11:12:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:12:52,967 INFO L82 PathProgramCache]: Analyzing trace with hash 88, now seen corresponding path program 1 times [2020-07-01 11:12:52,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:12:52,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569213585] [2020-07-01 11:12:52,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:12:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,052 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:12:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:12:53,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2590, now seen corresponding path program 1 times [2020-07-01 11:12:53,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:12:53,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011027345] [2020-07-01 11:12:53,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:12:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,070 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:12:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:12:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash 86197, now seen corresponding path program 1 times [2020-07-01 11:12:53,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:12:53,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215790444] [2020-07-01 11:12:53,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:12:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:12:53,092 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:12:53,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:12:53 BasicIcfg [2020-07-01 11:12:53,189 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:12:53,192 INFO L168 Benchmark]: Toolchain (without parser) took 1116.86 ms. Allocated memory was 514.9 MB in the beginning and 551.6 MB in the end (delta: 36.7 MB). Free memory was 439.3 MB in the beginning and 465.1 MB in the end (delta: -25.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,192 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:12:53,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.79 ms. Allocated memory was 514.9 MB in the beginning and 551.6 MB in the end (delta: 36.7 MB). Free memory was 438.7 MB in the beginning and 519.5 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 551.6 MB. Free memory was 519.5 MB in the beginning and 517.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,194 INFO L168 Benchmark]: Boogie Preprocessor took 20.76 ms. Allocated memory is still 551.6 MB. Free memory was 517.8 MB in the beginning and 516.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,195 INFO L168 Benchmark]: RCFGBuilder took 234.33 ms. Allocated memory is still 551.6 MB. Free memory was 516.2 MB in the beginning and 504.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,195 INFO L168 Benchmark]: BlockEncodingV2 took 84.04 ms. Allocated memory is still 551.6 MB. Free memory was 504.0 MB in the beginning and 498.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,196 INFO L168 Benchmark]: TraceAbstraction took 145.10 ms. Allocated memory is still 551.6 MB. Free memory was 497.5 MB in the beginning and 489.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,197 INFO L168 Benchmark]: BuchiAutomizer took 300.78 ms. Allocated memory is still 551.6 MB. Free memory was 488.7 MB in the beginning and 465.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 50.3 GB. [2020-07-01 11:12:53,201 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 13 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 290.79 ms. Allocated memory was 514.9 MB in the beginning and 551.6 MB in the end (delta: 36.7 MB). Free memory was 438.7 MB in the beginning and 519.5 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 551.6 MB. Free memory was 519.5 MB in the beginning and 517.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.76 ms. Allocated memory is still 551.6 MB. Free memory was 517.8 MB in the beginning and 516.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 234.33 ms. Allocated memory is still 551.6 MB. Free memory was 516.2 MB in the beginning and 504.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 84.04 ms. Allocated memory is still 551.6 MB. Free memory was 504.0 MB in the beginning and 498.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.10 ms. Allocated memory is still 551.6 MB. Free memory was 497.5 MB in the beginning and 489.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 300.78 ms. Allocated memory is still 551.6 MB. Free memory was 488.7 MB in the beginning and 465.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 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: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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 0.2s. 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: 16]: 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 {y2=1, y1=0, \old(y1)=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73232673=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@772a41e3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3eab86a8=0, \old(y2)=1, y2=1, \result=0, y1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L27] int y1 = __VERIFIER_nondet_int(); [L28] int y2 = __VERIFIER_nondet_int(); [L29] COND TRUE y1 >= 0 && y2 >= 0 Loop: [L16] COND TRUE y1 != y2 [L17] COND FALSE !(y1 > y2) [L20] y2 = y2 - y1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 11:12:48.821 ----------------------------------------------- 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_ql0Uq8/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:12:53.439 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check