NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 22:28:40,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 22:28:40,188 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 22:28:40,199 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 22:28:40,199 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 22:28:40,200 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 22:28:40,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 22:28:40,203 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 22:28:40,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 22:28:40,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 22:28:40,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 22:28:40,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 22:28:40,207 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 22:28:40,208 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 22:28:40,209 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 22:28:40,210 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 22:28:40,211 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 22:28:40,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 22:28:40,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 22:28:40,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 22:28:40,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 22:28:40,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 22:28:40,220 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 22:28:40,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 22:28:40,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 22:28:40,221 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 22:28:40,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 22:28:40,222 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 22:28:40,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 22:28:40,223 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 22:28:40,224 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 22:28:40,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 22:28:40,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 22:28:40,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 22:28:40,226 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 22:28:40,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 22:28:40,227 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 22:28:40,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 22:28:40,228 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 22:28:40,229 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 22:28:40,243 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 22:28:40,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 22:28:40,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 22:28:40,245 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 22:28:40,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 22:28:40,245 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:28:40,245 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 22:28:40,246 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 22:28:40,246 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 22:28:40,246 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 22:28:40,246 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 22:28:40,246 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 22:28:40,246 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 22:28:40,247 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 22:28:40,247 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:28:40,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 22:28:40,247 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 22:28:40,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 22:28:40,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 22:28:40,248 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 22:28:40,248 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 22:28:40,248 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 22:28:40,248 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 22:28:40,248 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 22:28:40,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 22:28:40,249 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 22:28:40,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 22:28:40,249 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 22:28:40,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 22:28:40,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 22:28:40,289 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 22:28:40,292 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 22:28:40,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 22:28:40,294 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 22:28:40,295 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:28:40,394 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/a05ab235e757493f9aa6ba334ed500ab/FLAG2f9eea8c0 [2020-06-21 22:28:40,733 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 22:28:40,733 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:28:40,740 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/a05ab235e757493f9aa6ba334ed500ab/FLAG2f9eea8c0 [2020-06-21 22:28:41,150 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/a05ab235e757493f9aa6ba334ed500ab [2020-06-21 22:28:41,161 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 22:28:41,162 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 22:28:41,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 22:28:41,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 22:28:41,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 22:28:41,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12456e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 22:28:41,195 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 22:28:41,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:28:41,357 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 22:28:41,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:28:41,456 INFO L195 MainTranslator]: Completed translation [2020-06-21 22:28:41,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41 WrapperNode [2020-06-21 22:28:41,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 22:28:41,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 22:28:41,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 22:28:41,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 22:28:41,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 22:28:41,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 22:28:41,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 22:28:41,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 22:28:41,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 22:28:41,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 22:28:41,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 22:28:41,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 22:28:41,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (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 [2020-06-21 22:28:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 22:28:41,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 22:28:41,710 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 22:28:41,710 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 22:28:41,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:41 BoogieIcfgContainer [2020-06-21 22:28:41,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 22:28:41,712 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 22:28:41,712 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 22:28:41,715 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 22:28:41,716 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:41" (1/1) ... [2020-06-21 22:28:41,731 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-21 22:28:41,733 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 22:28:41,734 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 22:28:41,734 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 22:28:41,735 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:28:41,737 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 22:28:41,738 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 22:28:41,738 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 22:28:41,753 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 22:28:41,761 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 22:28:41,767 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 22:28:41,768 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:28:41,780 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 22:28:41,783 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-21 22:28:41,784 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:28:41,785 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:28:41,790 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-21 22:28:41,790 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:28:41,790 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:28:41,791 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:28:41,791 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 22:28:41,791 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:28:41,791 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-06-21 22:28:41,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:41 BasicIcfg [2020-06-21 22:28:41,792 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 22:28:41,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 22:28:41,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 22:28:41,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 22:28:41,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:28:41" (1/4) ... [2020-06-21 22:28:41,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ce3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (2/4) ... [2020-06-21 22:28:41,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ce3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:41" (3/4) ... [2020-06-21 22:28:41,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ce3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:41" (4/4) ... [2020-06-21 22:28:41,801 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:28:41,810 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 22:28:41,818 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 22:28:41,835 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 22:28:41,865 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:28:41,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 22:28:41,866 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 22:28:41,866 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:28:41,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:28:41,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:28:41,866 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 22:28:41,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:28:41,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 22:28:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-21 22:28:41,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 22:28:41,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-21 22:28:41,939 INFO L451 ceAbstractionStarter]: At program point L18-2(lines 18 20) the Hoare annotation is: true [2020-06-21 22:28:41,939 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 22:28:41,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:41 BasicIcfg [2020-06-21 22:28:41,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 22:28:41,948 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 22:28:41,948 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 22:28:41,951 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 22:28:41,952 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:41,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 10:28:41" (1/5) ... [2020-06-21 22:28:41,953 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@528af836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,953 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:41,953 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:28:41" (2/5) ... [2020-06-21 22:28:41,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@528af836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,954 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:41,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:28:41" (3/5) ... [2020-06-21 22:28:41,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@528af836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:41,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:28:41" (4/5) ... [2020-06-21 22:28:41,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@528af836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:41, skipping insertion in model container [2020-06-21 22:28:41,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:28:41,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:28:41" (5/5) ... [2020-06-21 22:28:41,957 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:28:41,983 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:28:41,984 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 22:28:41,984 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 22:28:41,984 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:28:41,984 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:28:41,984 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:28:41,984 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 22:28:41,985 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:28:41,985 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 22:28:41,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:28:42,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:28:42,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:28:42,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:28:42,013 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:28:42,013 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:28:42,013 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 22:28:42,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:28:42,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:28:42,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:28:42,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:28:42,014 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:28:42,014 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:28:42,019 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L18-2: Formula: (< v_ULTIMATE.start_main_~y~0_9 1) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L18-2true [2020-06-21 22:28:42,020 INFO L796 eck$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 (+ (* (- 1) v_ULTIMATE.start_main_~y~0_8) 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 [2020-06-21 22:28:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-06-21 22:28:42,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:42,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:42,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-06-21 22:28:42,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:42,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:42,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:42,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:28:42,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2135, now seen corresponding path program 1 times [2020-06-21 22:28:42,106 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:28:42,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:28:42,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:28:42,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:28:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:28:42,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:28:42 BasicIcfg [2020-06-21 22:28:42,171 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 22:28:42,172 INFO L168 Benchmark]: Toolchain (without parser) took 1010.35 ms. Allocated memory was 649.6 MB in the beginning and 667.9 MB in the end (delta: 18.4 MB). Free memory was 563.8 MB in the beginning and 583.9 MB in the end (delta: -20.1 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:28:42,174 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 591.1 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:28:42,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.53 ms. Allocated memory was 649.6 MB in the beginning and 667.9 MB in the end (delta: 18.4 MB). Free memory was 563.8 MB in the beginning and 636.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.55 ms. Allocated memory is still 667.9 MB. Free memory was 634.9 MB in the beginning and 633.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,176 INFO L168 Benchmark]: Boogie Preprocessor took 19.76 ms. Allocated memory is still 667.9 MB. Free memory was 633.8 MB in the beginning and 631.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,176 INFO L168 Benchmark]: RCFGBuilder took 198.76 ms. Allocated memory is still 667.9 MB. Free memory was 631.0 MB in the beginning and 618.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,177 INFO L168 Benchmark]: BlockEncodingV2 took 79.75 ms. Allocated memory is still 667.9 MB. Free memory was 618.5 MB in the beginning and 613.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,178 INFO L168 Benchmark]: TraceAbstraction took 154.60 ms. Allocated memory is still 667.9 MB. Free memory was 613.1 MB in the beginning and 604.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,179 INFO L168 Benchmark]: BuchiAutomizer took 222.96 ms. Allocated memory is still 667.9 MB. Free memory was 603.4 MB in the beginning and 583.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 50.3 GB. [2020-06-21 22:28:42,184 INFO L337 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 649.6 MB. Free memory is still 591.1 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 293.53 ms. Allocated memory was 649.6 MB in the beginning and 667.9 MB in the end (delta: 18.4 MB). Free memory was 563.8 MB in the beginning and 636.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.55 ms. Allocated memory is still 667.9 MB. Free memory was 634.9 MB in the beginning and 633.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.76 ms. Allocated memory is still 667.9 MB. Free memory was 633.8 MB in the beginning and 631.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * RCFGBuilder took 198.76 ms. Allocated memory is still 667.9 MB. Free memory was 631.0 MB in the beginning and 618.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 79.75 ms. Allocated memory is still 667.9 MB. Free memory was 618.5 MB in the beginning and 613.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.60 ms. Allocated memory is still 667.9 MB. Free memory was 613.1 MB in the beginning and 604.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 222.96 ms. Allocated memory is still 667.9 MB. Free memory was 603.4 MB in the beginning and 583.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 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: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 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@7a2b93f7=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47f75894=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 2020-06-21 22:28:37.871 ----------------------------------------------- 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 -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 22:28:42.421 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check