/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 10:57:06,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:57:06,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:57:06,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:57:06,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:57:06,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:57:06,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:57:06,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:57:06,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:57:06,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:57:06,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:57:06,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:57:06,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:57:06,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:57:06,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:57:06,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:57:06,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:57:06,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:57:06,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:57:06,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:57:06,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:57:06,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:57:06,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:57:06,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:57:06,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:57:06,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:57:06,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:57:06,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:57:06,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:57:06,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:57:06,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:57:06,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:57:06,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:57:06,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:57:06,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:57:06,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:57:06,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:57:06,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:57:06,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:57:06,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:57:06,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:57:06,579 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:57:06,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:57:06,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:57:06,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:57:06,595 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:57:06,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:57:06,595 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:57:06,595 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:57:06,595 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:57:06,596 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:57:06,597 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:57:06,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:57:06,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:57:06,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:57:06,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:57:06,597 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:57:06,598 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:57:06,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:57:06,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:57:06,598 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:57:06,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:57:06,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:57:06,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:57:06,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:57:06,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:57:06,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:57:06,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:57:06,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:57:06,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:57:06,782 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:57:06,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:57:06,852 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_RL4l2T/tmp/a43c4893949f493db473a84b4248a96f/FLAGa31782328 [2020-07-01 10:57:07,188 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:57:07,189 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:57:07,195 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_RL4l2T/tmp/a43c4893949f493db473a84b4248a96f/FLAGa31782328 [2020-07-01 10:57:07,603 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_RL4l2T/tmp/a43c4893949f493db473a84b4248a96f [2020-07-01 10:57:07,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:57:07,616 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:57:07,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:57:07,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:57:07,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:57:07,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c6dad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07, skipping insertion in model container [2020-07-01 10:57:07,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:57:07,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:57:07,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:57:07,864 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:57:07,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:57:07,893 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:57:07,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07 WrapperNode [2020-07-01 10:57:07,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:57:07,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:57:07,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:57:07,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:57:07,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:57:07,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:57:07,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:57:07,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:57:07,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (1/1) ... [2020-07-01 10:57:07,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:57:07,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:57:07,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:57:07,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:57:07,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (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 10:57:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:57:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:57:08,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:57:08,152 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:57:08,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:57:08 BoogieIcfgContainer [2020-07-01 10:57:08,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:57:08,156 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:57:08,156 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:57:08,158 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:57:08,159 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:57:08" (1/1) ... [2020-07-01 10:57:08,171 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 10:57:08,173 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:57:08,173 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:57:08,174 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:57:08,174 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:57:08,176 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:57:08,177 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:57:08,177 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:57:08,190 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:57:08,197 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 10:57:08,202 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:57:08,203 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:57:08,213 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:57:08,215 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 10:57:08,217 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:57:08,217 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:57:08,222 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 10:57:08,223 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:57:08,223 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:57:08,223 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:57:08,223 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:57:08,223 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:57:08,224 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 10:57:08,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:57:08 BasicIcfg [2020-07-01 10:57:08,224 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:57:08,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:57:08,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:57:08,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:57:08,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:57:07" (1/4) ... [2020-07-01 10:57:08,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (2/4) ... [2020-07-01 10:57:08,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:57:08" (3/4) ... [2020-07-01 10:57:08,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103594d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:57:08" (4/4) ... [2020-07-01 10:57:08,233 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:57:08,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:57:08,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:57:08,265 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:57:08,288 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:57:08,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:57:08,289 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:57:08,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:57:08,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:57:08,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:57:08,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:57:08,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:57:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 10:57:08,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:57:08,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 10:57:08,362 INFO L271 CegarLoopResult]: At program point L18-2(lines 18 20) the Hoare annotation is: true [2020-07-01 10:57:08,362 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:57:08,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:57:08 BasicIcfg [2020-07-01 10:57:08,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:57:08,372 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:57:08,372 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:57:08,375 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:57:08,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:57:08,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:57:07" (1/5) ... [2020-07-01 10:57:08,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41f3c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:57:08,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:57:07" (2/5) ... [2020-07-01 10:57:08,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41f3c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:57:08,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:57:08" (3/5) ... [2020-07-01 10:57:08,379 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41f3c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:57:08,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:57:08" (4/5) ... [2020-07-01 10:57:08,380 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41f3c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:57:08, skipping insertion in model container [2020-07-01 10:57:08,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:57:08,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:57:08" (5/5) ... [2020-07-01 10:57:08,382 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:57:08,410 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:57:08,410 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:57:08,411 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:57:08,411 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:57:08,411 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:57:08,411 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:57:08,412 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:57:08,412 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:57:08,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:57:08,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:57:08,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:57:08,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:57:08,438 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:57:08,438 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:57:08,438 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:57:08,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:57:08,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:57:08,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:57:08,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:57:08,439 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:57:08,439 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:57:08,444 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L18-2: Formula: (< v_ULTIMATE.start_main_~y~0_9 1) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L18-2true [2020-07-01 10:57:08,445 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-2true [27] L18-2-->L18-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~x~0_7 (+ (* v_ULTIMATE.start_main_~y~0_8 (- 1)) v_ULTIMATE.start_main_~x~0_8))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} 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_~x~0] 4#L18-2true [2020-07-01 10:57:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:57:08,451 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 10:57:08,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:57:08,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098517015] [2020-07-01 10:57:08,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:57:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,531 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:57:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:57:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-07-01 10:57:08,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:57:08,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102462708] [2020-07-01 10:57:08,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:57:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,545 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:57:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:57:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2135, now seen corresponding path program 1 times [2020-07-01 10:57:08,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:57:08,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573199148] [2020-07-01 10:57:08,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:57:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:57:08,557 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:57:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:57:08 BasicIcfg [2020-07-01 10:57:08,617 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:57:08,620 INFO L168 Benchmark]: Toolchain (without parser) took 1003.29 ms. Allocated memory was 514.9 MB in the beginning and 562.0 MB in the end (delta: 47.2 MB). Free memory was 438.1 MB in the beginning and 483.2 MB in the end (delta: -45.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,620 INFO L168 Benchmark]: CDTParser took 0.17 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 10:57:08,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.64 ms. Allocated memory was 514.9 MB in the beginning and 562.0 MB in the end (delta: 47.2 MB). Free memory was 438.1 MB in the beginning and 530.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 562.0 MB. Free memory was 529.4 MB in the beginning and 528.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,622 INFO L168 Benchmark]: Boogie Preprocessor took 18.63 ms. Allocated memory is still 562.0 MB. Free memory was 528.0 MB in the beginning and 526.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,623 INFO L168 Benchmark]: RCFGBuilder took 210.88 ms. Allocated memory is still 562.0 MB. Free memory was 526.7 MB in the beginning and 515.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,623 INFO L168 Benchmark]: BlockEncodingV2 took 68.20 ms. Allocated memory is still 562.0 MB. Free memory was 515.2 MB in the beginning and 510.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,624 INFO L168 Benchmark]: TraceAbstraction took 145.53 ms. Allocated memory is still 562.0 MB. Free memory was 509.8 MB in the beginning and 501.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,625 INFO L168 Benchmark]: BuchiAutomizer took 245.23 ms. Allocated memory is still 562.0 MB. Free memory was 501.6 MB in the beginning and 483.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:57:08,631 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 2 locations, 2 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 276.64 ms. Allocated memory was 514.9 MB in the beginning and 562.0 MB in the end (delta: 47.2 MB). Free memory was 438.1 MB in the beginning and 530.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 31.86 ms. Allocated memory is still 562.0 MB. Free memory was 529.4 MB in the beginning and 528.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.63 ms. Allocated memory is still 562.0 MB. Free memory was 528.0 MB in the beginning and 526.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 210.88 ms. Allocated memory is still 562.0 MB. Free memory was 526.7 MB in the beginning and 515.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 68.20 ms. Allocated memory is still 562.0 MB. Free memory was 515.2 MB in the beginning and 510.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.53 ms. Allocated memory is still 562.0 MB. Free memory was 509.8 MB in the beginning and 501.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 245.23 ms. Allocated memory is still 562.0 MB. Free memory was 501.6 MB in the beginning and 483.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 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: 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cbf3d16=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30f52c5b=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x; [L14] int y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE y < 1 Loop: [L18] COND TRUE x >= 0 [L19] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:57:04.355 ----------------------------------------------- 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_RL4l2T/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:57:08.867 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check