NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:29:37,819 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:29:37,821 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:29:37,832 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:29:37,833 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:29:37,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:29:37,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:29:37,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:29:37,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:29:37,838 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:29:37,839 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:29:37,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:29:37,840 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:29:37,841 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:29:37,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:29:37,843 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:29:37,844 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:29:37,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:29:37,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:29:37,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:29:37,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:29:37,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:29:37,852 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:29:37,853 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:29:37,853 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:29:37,854 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:29:37,854 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:29:37,855 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:29:37,855 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:29:37,856 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:29:37,856 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:29:37,857 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:29:37,858 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:29:37,858 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:29:37,859 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:29:37,859 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:29:37,859 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:29:37,860 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:29:37,861 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:29:37,861 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 23:29:37,876 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:29:37,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:29:37,877 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:29:37,877 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:29:37,877 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:29:37,878 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:29:37,878 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:29:37,878 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:29:37,878 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:29:37,878 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:29:37,878 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:29:37,879 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:29:37,879 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:29:37,879 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:29:37,879 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:29:37,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:29:37,879 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:29:37,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:29:37,880 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:29:37,880 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:29:37,880 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:29:37,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:29:37,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:29:37,881 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:29:37,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:29:37,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:29:37,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:29:37,881 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:29:37,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:29:37,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:29:37,919 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:29:37,922 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:29:37,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:29:37,924 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:29:37,925 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:29:37,992 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/de4023da3ec745a59b2f21efd061dd33/FLAGa8540a6ce [2020-06-21 23:29:38,314 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:29:38,315 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:29:38,321 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/de4023da3ec745a59b2f21efd061dd33/FLAGa8540a6ce [2020-06-21 23:29:38,731 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/de4023da3ec745a59b2f21efd061dd33 [2020-06-21 23:29:38,742 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:29:38,744 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:29:38,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:29:38,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:29:38,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:29:38,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:29:38" (1/1) ... [2020-06-21 23:29:38,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdfede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:38, skipping insertion in model container [2020-06-21 23:29:38,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:29:38" (1/1) ... [2020-06-21 23:29:38,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:29:38,778 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:29:38,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:29:38,937 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:29:38,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:29:39,032 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:29:39,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39 WrapperNode [2020-06-21 23:29:39,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:29:39,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:29:39,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:29:39,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:29:39,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:29:39,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:29:39,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:29:39,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:29:39,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:29:39,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:29:39,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:29:39,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:29:39,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (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 23:29:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:29:39,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:29:39,320 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:29:39,320 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:29:39,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:29:39 BoogieIcfgContainer [2020-06-21 23:29:39,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:29:39,322 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:29:39,323 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:29:39,325 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:29:39,326 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:29:39" (1/1) ... [2020-06-21 23:29:39,341 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-06-21 23:29:39,343 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:29:39,344 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:29:39,344 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:29:39,345 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:29:39,346 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:29:39,347 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:29:39,348 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:29:39,363 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:29:39,379 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-21 23:29:39,383 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 23:29:39,385 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:29:39,404 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-21 23:29:39,406 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 23:29:39,408 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:29:39,408 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:29:39,408 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:29:39,408 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:29:39,409 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 10 edges [2020-06-21 23:29:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:29:39 BasicIcfg [2020-06-21 23:29:39,409 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:29:39,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:29:39,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:29:39,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:29:39,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:29:38" (1/4) ... [2020-06-21 23:29:39,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5798aa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (2/4) ... [2020-06-21 23:29:39,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5798aa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:29:39" (3/4) ... [2020-06-21 23:29:39,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5798aa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:29:39" (4/4) ... [2020-06-21 23:29:39,419 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:29:39,428 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:29:39,436 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:29:39,453 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:29:39,482 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:29:39,482 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:29:39,483 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:29:39,483 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:29:39,483 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:29:39,483 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:29:39,483 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:29:39,483 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:29:39,483 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:29:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-06-21 23:29:39,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:29:39,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-06-21 23:29:39,556 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:29:39,556 INFO L448 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-06-21 23:29:39,556 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-06-21 23:29:39,556 INFO L451 ceAbstractionStarter]: At program point L10-1(lines 9 18) the Hoare annotation is: true [2020-06-21 23:29:39,557 INFO L448 ceAbstractionStarter]: For program point L11-2(lines 10 17) no Hoare annotation was computed. [2020-06-21 23:29:39,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:29:39 BasicIcfg [2020-06-21 23:29:39,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:29:39,566 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:29:39,566 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:29:39,569 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:29:39,570 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:29:39,570 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:29:38" (1/5) ... [2020-06-21 23:29:39,571 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@434f1f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,571 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:29:39,571 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:29:39" (2/5) ... [2020-06-21 23:29:39,572 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@434f1f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,572 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:29:39,572 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:29:39" (3/5) ... [2020-06-21 23:29:39,572 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@434f1f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,572 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:29:39,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:29:39" (4/5) ... [2020-06-21 23:29:39,573 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@434f1f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:29:39, skipping insertion in model container [2020-06-21 23:29:39,573 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:29:39,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:29:39" (5/5) ... [2020-06-21 23:29:39,575 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:29:39,602 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:29:39,602 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:29:39,602 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:29:39,608 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:29:39,609 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:29:39,609 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:29:39,609 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:29:39,609 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:29:39,609 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:29:39,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-21 23:29:39,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:29:39,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:29:39,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:29:39,638 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:29:39,638 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:29:39,638 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:29:39,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-21 23:29:39,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:29:39,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:29:39,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:29:39,640 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:29:39,640 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:29:39,645 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [38] ULTIMATE.startENTRY-->L10-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 6#L10-1true [2020-06-21 23:29:39,645 INFO L796 eck$LassoCheckResult]: Loop: 6#L10-1true [53] L10-1-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 3#L10true [55] L10-->L10-1: Formula: (>= 0 (+ v_ULTIMATE.start_main_~i~0_15 5)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} AuxVars[] AssignedVars[] 6#L10-1true [2020-06-21 23:29:39,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:29:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-06-21 23:29:39,652 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:29:39,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:29:39,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:29:39,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:29:39,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2659, now seen corresponding path program 1 times [2020-06-21 23:29:39,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:29:39,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:29:39,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:29:39,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:29:39,737 INFO L82 PathProgramCache]: Analyzing trace with hash 68007, now seen corresponding path program 1 times [2020-06-21 23:29:39,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:29:39,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:29:39,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:29:39,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:29:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:29:39,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:29:39 BasicIcfg [2020-06-21 23:29:39,797 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:29:39,798 INFO L168 Benchmark]: Toolchain (without parser) took 1054.55 ms. Allocated memory was 514.9 MB in the beginning and 574.1 MB in the end (delta: 59.2 MB). Free memory was 437.3 MB in the beginning and 503.8 MB in the end (delta: -66.5 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:29:39,800 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 457.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:29:39,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.14 ms. Allocated memory was 514.9 MB in the beginning and 574.1 MB in the end (delta: 59.2 MB). Free memory was 437.3 MB in the beginning and 545.8 MB in the end (delta: -108.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 574.1 MB. Free memory was 545.8 MB in the beginning and 543.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,802 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 574.1 MB. Free memory was 543.6 MB in the beginning and 542.7 MB in the end (delta: 850.5 kB). Peak memory consumption was 850.5 kB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,802 INFO L168 Benchmark]: RCFGBuilder took 229.09 ms. Allocated memory is still 574.1 MB. Free memory was 542.7 MB in the beginning and 532.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,803 INFO L168 Benchmark]: BlockEncodingV2 took 87.06 ms. Allocated memory is still 574.1 MB. Free memory was 532.1 MB in the beginning and 526.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,804 INFO L168 Benchmark]: TraceAbstraction took 155.00 ms. Allocated memory is still 574.1 MB. Free memory was 526.1 MB in the beginning and 517.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,804 INFO L168 Benchmark]: BuchiAutomizer took 231.42 ms. Allocated memory is still 574.1 MB. Free memory was 517.5 MB in the beginning and 503.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 50.3 GB. [2020-06-21 23:29:39,809 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 10 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 457.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 288.14 ms. Allocated memory was 514.9 MB in the beginning and 574.1 MB in the end (delta: 59.2 MB). Free memory was 437.3 MB in the beginning and 545.8 MB in the end (delta: -108.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 574.1 MB. Free memory was 545.8 MB in the beginning and 543.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 574.1 MB. Free memory was 543.6 MB in the beginning and 542.7 MB in the end (delta: 850.5 kB). Peak memory consumption was 850.5 kB. Max. memory is 50.3 GB. * RCFGBuilder took 229.09 ms. Allocated memory is still 574.1 MB. Free memory was 542.7 MB in the beginning and 532.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 87.06 ms. Allocated memory is still 574.1 MB. Free memory was 532.1 MB in the beginning and 526.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 50.3 GB. * TraceAbstraction took 155.00 ms. Allocated memory is still 574.1 MB. Free memory was 526.1 MB in the beginning and 517.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 231.42 ms. Allocated memory is still 574.1 MB. Free memory was 517.5 MB in the beginning and 503.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 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: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 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=5occurred 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: 9]: 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@673f6fd8=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i != 0 [L10] COND FALSE !(i > -5 && i < 5) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-21 23:29:35.510 ----------------------------------------------- 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 23:29:40.045 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check