NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:22:09,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:22:09,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:22:09,413 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:22:09,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:22:09,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:22:09,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:22:09,417 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:22:09,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:22:09,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:22:09,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:22:09,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:22:09,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:22:09,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:22:09,423 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:22:09,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:22:09,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:22:09,426 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:22:09,428 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:22:09,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:22:09,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:22:09,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:22:09,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:22:09,433 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:22:09,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:22:09,434 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:22:09,435 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:22:09,436 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:22:09,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:22:09,436 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:22:09,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:22:09,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:22:09,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:22:09,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:22:09,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:22:09,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:22:09,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:22:09,441 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:22:09,441 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:22:09,442 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 23:22:09,456 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:22:09,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:22:09,457 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:22:09,457 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:22:09,457 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:22:09,458 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:22:09,458 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:22:09,459 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:22:09,459 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:22:09,459 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:22:09,459 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:22:09,459 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:22:09,459 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:22:09,460 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:22:09,460 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:22:09,460 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:22:09,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:22:09,460 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:22:09,460 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:22:09,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:22:09,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:22:09,461 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:22:09,461 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:22:09,461 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:22:09,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:22:09,499 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:22:09,502 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:22:09,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:22:09,504 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:22:09,504 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:22:09,573 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/2630fdfda6514955ac6651006612dfbb/FLAG5b95c88a9 [2020-06-21 23:22:09,889 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:22:09,890 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:22:09,896 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/2630fdfda6514955ac6651006612dfbb/FLAG5b95c88a9 [2020-06-21 23:22:10,299 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/2630fdfda6514955ac6651006612dfbb [2020-06-21 23:22:10,311 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:22:10,313 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:22:10,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:22:10,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:22:10,318 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:22:10,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c558d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10, skipping insertion in model container [2020-06-21 23:22:10,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:22:10,347 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:22:10,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:22:10,500 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:22:10,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:22:10,528 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:22:10,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10 WrapperNode [2020-06-21 23:22:10,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:22:10,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:22:10,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:22:10,530 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:22:10,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:22:10,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:22:10,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:22:10,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:22:10,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:22:10,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:22:10,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:22:10,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:22:10,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (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 23:22:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:22:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:22:10,810 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:22:10,810 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:22:10,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:22:10 BoogieIcfgContainer [2020-06-21 23:22:10,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:22:10,812 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:22:10,812 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:22:10,814 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:22:10,815 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:22:10" (1/1) ... [2020-06-21 23:22:10,828 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-06-21 23:22:10,829 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:22:10,830 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:22:10,830 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:22:10,831 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:22:10,832 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:22:10,833 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:22:10,834 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:22:10,845 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:22:10,849 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 23:22:10,854 INFO L70 emoveInfeasibleEdges]: Removed 5 edges and 4 locations because of local infeasibility [2020-06-21 23:22:10,856 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:22:10,858 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:22:10,859 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:22:10,861 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:22:10,861 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:22:10,861 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:22:10,861 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:22:10,862 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-06-21 23:22:10,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:22:10 BasicIcfg [2020-06-21 23:22:10,862 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:22:10,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:22:10,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:22:10,866 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:22:10,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:22:10" (1/4) ... [2020-06-21 23:22:10,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b02b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:22:10, skipping insertion in model container [2020-06-21 23:22:10,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (2/4) ... [2020-06-21 23:22:10,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b02b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:22:10, skipping insertion in model container [2020-06-21 23:22:10,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:22:10" (3/4) ... [2020-06-21 23:22:10,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b02b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:22:10, skipping insertion in model container [2020-06-21 23:22:10,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:22:10" (4/4) ... [2020-06-21 23:22:10,870 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:22:10,880 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:22:10,888 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:22:10,905 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:22:10,933 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:22:10,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:22:10,934 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:22:10,934 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:22:10,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:22:10,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:22:10,934 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:22:10,934 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:22:10,934 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:22:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-21 23:22:10,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:22:10,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-21 23:22:11,009 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:22:11,009 INFO L451 ceAbstractionStarter]: At program point L10-2(lines 10 12) the Hoare annotation is: true [2020-06-21 23:22:11,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:22:11 BasicIcfg [2020-06-21 23:22:11,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:22:11,017 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:22:11,017 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:22:11,021 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:22:11,021 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:22:11,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:22:10" (1/5) ... [2020-06-21 23:22:11,022 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51b58e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:22:11, skipping insertion in model container [2020-06-21 23:22:11,022 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:22:11,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:22:10" (2/5) ... [2020-06-21 23:22:11,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51b58e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:22:11, skipping insertion in model container [2020-06-21 23:22:11,023 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:22:11,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:22:10" (3/5) ... [2020-06-21 23:22:11,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51b58e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:22:11, skipping insertion in model container [2020-06-21 23:22:11,024 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:22:11,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:22:10" (4/5) ... [2020-06-21 23:22:11,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51b58e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:22:11, skipping insertion in model container [2020-06-21 23:22:11,024 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:22:11,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:22:11" (5/5) ... [2020-06-21 23:22:11,026 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:22:11,054 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:22:11,054 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:22:11,055 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:22:11,055 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:22:11,055 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:22:11,055 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:22:11,055 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:22:11,055 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:22:11,056 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:22:11,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 23:22:11,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 23:22:11,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:22:11,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:22:11,081 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:22:11,081 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 23:22:11,081 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:22:11,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 23:22:11,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 23:22:11,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:22:11,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:22:11,083 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:22:11,083 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 23:22:11,088 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L10-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res] 4#L10-2true [2020-06-21 23:22:11,088 INFO L796 eck$LassoCheckResult]: Loop: 4#L10-2true [23] L10-2-->L10-2: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 4#L10-2true [2020-06-21 23:22:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:22:11,094 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-06-21 23:22:11,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:22:11,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:22:11,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:22:11,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:22:11,152 INFO L82 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2020-06-21 23:22:11,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:22:11,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:22:11,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:22:11,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:22:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1542, now seen corresponding path program 1 times [2020-06-21 23:22:11,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:22:11,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:22:11,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:22:11,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:22:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:22:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:22:11 BasicIcfg [2020-06-21 23:22:11,195 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:22:11,195 INFO L168 Benchmark]: Toolchain (without parser) took 883.99 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 561.0 MB in the beginning and 609.8 MB in the end (delta: -48.8 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:22:11,198 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 580.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:22:11,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.67 ms. Allocated memory is still 649.6 MB. Free memory was 559.9 MB in the beginning and 550.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.65 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 550.2 MB in the beginning and 650.0 MB in the end (delta: -99.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,200 INFO L168 Benchmark]: Boogie Preprocessor took 18.58 ms. Allocated memory is still 683.1 MB. Free memory was 650.0 MB in the beginning and 648.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,201 INFO L168 Benchmark]: RCFGBuilder took 168.72 ms. Allocated memory is still 683.1 MB. Free memory was 648.9 MB in the beginning and 635.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,202 INFO L168 Benchmark]: BlockEncodingV2 took 50.53 ms. Allocated memory is still 683.1 MB. Free memory was 635.8 MB in the beginning and 632.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,203 INFO L168 Benchmark]: TraceAbstraction took 153.78 ms. Allocated memory is still 683.1 MB. Free memory was 631.4 MB in the beginning and 621.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,204 INFO L168 Benchmark]: BuchiAutomizer took 177.32 ms. Allocated memory is still 683.1 MB. Free memory was 621.6 MB in the beginning and 609.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 50.3 GB. [2020-06-21 23:22:11,212 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 7 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 580.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 215.67 ms. Allocated memory is still 649.6 MB. Free memory was 559.9 MB in the beginning and 550.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 93.65 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 550.2 MB in the beginning and 650.0 MB in the end (delta: -99.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.58 ms. Allocated memory is still 683.1 MB. Free memory was 650.0 MB in the beginning and 648.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 168.72 ms. Allocated memory is still 683.1 MB. Free memory was 648.9 MB in the beginning and 635.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 50.53 ms. Allocated memory is still 683.1 MB. Free memory was 635.8 MB in the beginning and 632.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 50.3 GB. * TraceAbstraction took 153.78 ms. Allocated memory is still 683.1 MB. Free memory was 631.4 MB in the beginning and 621.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 177.32 ms. Allocated memory is still 683.1 MB. Free memory was 621.6 MB in the beginning and 609.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 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: 10]: 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 0.0s. 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: 10]: 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 {\result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: Loop: [L10] COND TRUE 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-21 23:22:07.110 ----------------------------------------------- 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 23:22:11.452 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check