YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:52:26,009 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:52:26,011 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:52:26,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:52:26,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:52:26,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:52:26,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:52:26,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:52:26,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:52:26,028 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:52:26,029 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:52:26,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:52:26,030 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:52:26,031 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:52:26,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:52:26,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:52:26,034 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:52:26,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:52:26,037 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:52:26,039 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:52:26,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:52:26,041 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:52:26,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:52:26,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:52:26,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:52:26,044 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:52:26,045 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:52:26,046 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:52:26,046 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:52:26,047 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:52:26,047 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:52:26,048 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:52:26,049 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:52:26,049 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:52:26,050 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:52:26,050 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:52:26,050 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:52:26,051 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:52:26,052 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:52:26,052 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 08:52:26,066 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:52:26,066 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:52:26,068 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:52:26,068 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:52:26,068 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:52:26,068 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:52:26,068 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:52:26,068 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:52:26,069 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:52:26,070 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:26,070 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:52:26,070 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:52:26,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:52:26,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:52:26,070 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:52:26,071 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:52:26,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:52:26,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:52:26,071 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:52:26,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:52:26,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:52:26,072 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:52:26,072 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:52:26,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:52:26,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:52:26,110 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:52:26,114 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:52:26,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:52:26,116 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:52:26,116 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:52:26,227 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/fff0adac9f784a2087a1c5d921ebc36b/FLAGd3364793a [2020-06-22 08:52:26,572 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:52:26,573 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:52:26,580 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/fff0adac9f784a2087a1c5d921ebc36b/FLAGd3364793a [2020-06-22 08:52:26,983 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/fff0adac9f784a2087a1c5d921ebc36b [2020-06-22 08:52:26,994 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:52:26,996 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:52:26,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:52:26,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:52:27,000 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:52:27,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:52:26" (1/1) ... [2020-06-22 08:52:27,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48156933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:52:26" (1/1) ... [2020-06-22 08:52:27,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:52:27,029 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:52:27,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:52:27,187 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:52:27,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:52:27,268 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:52:27,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27 WrapperNode [2020-06-22 08:52:27,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:52:27,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:52:27,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:52:27,270 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:52:27,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:52:27,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:52:27,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:52:27,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:52:27,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:52:27,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:52:27,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:52:27,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:52:27,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:52:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:52:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:52:27,520 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:52:27,520 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 08:52:27,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:52:27 BoogieIcfgContainer [2020-06-22 08:52:27,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:52:27,522 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:52:27,522 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:52:27,524 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:52:27,525 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:52:27" (1/1) ... [2020-06-22 08:52:27,539 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-06-22 08:52:27,541 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:52:27,542 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:52:27,542 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:52:27,543 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:52:27,544 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:52:27,545 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:52:27,545 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:52:27,559 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:52:27,573 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 08:52:27,577 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 08:52:27,579 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:52:27,590 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 08:52:27,592 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-22 08:52:27,593 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:52:27,593 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:52:27,594 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:52:27,594 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:52:27,594 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-06-22 08:52:27,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:52:27 BasicIcfg [2020-06-22 08:52:27,596 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:52:27,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:52:27,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:52:27,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:52:27,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:52:26" (1/4) ... [2020-06-22 08:52:27,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d40296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (2/4) ... [2020-06-22 08:52:27,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d40296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:52:27" (3/4) ... [2020-06-22 08:52:27,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d40296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:52:27" (4/4) ... [2020-06-22 08:52:27,604 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:52:27,614 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:52:27,622 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 08:52:27,639 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 08:52:27,667 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:52:27,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:52:27,668 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:52:27,668 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:52:27,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:52:27,669 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:52:27,669 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:52:27,669 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:52:27,669 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:52:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-22 08:52:27,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 08:52:27,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-22 08:52:27,741 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 08:52:27,742 INFO L451 ceAbstractionStarter]: At program point L26-2(lines 26 29) the Hoare annotation is: true [2020-06-22 08:52:27,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:52:27 BasicIcfg [2020-06-22 08:52:27,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:52:27,750 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:52:27,751 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:52:27,754 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:52:27,755 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 08:52:27,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 08:52:26" (1/5) ... [2020-06-22 08:52:27,756 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2457c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,756 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 08:52:27,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:52:27" (2/5) ... [2020-06-22 08:52:27,756 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2457c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,756 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 08:52:27,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:52:27" (3/5) ... [2020-06-22 08:52:27,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2457c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,757 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 08:52:27,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:52:27" (4/5) ... [2020-06-22 08:52:27,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2457c0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 08:52:27, skipping insertion in model container [2020-06-22 08:52:27,758 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 08:52:27,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:52:27" (5/5) ... [2020-06-22 08:52:27,759 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:52:27,787 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:52:27,787 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 08:52:27,787 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 08:52:27,787 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:52:27,787 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:52:27,787 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:52:27,788 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 08:52:27,788 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:52:27,788 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 08:52:27,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-22 08:52:27,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 08:52:27,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 08:52:27,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 08:52:27,813 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 08:52:27,814 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 08:52:27,814 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 08:52:27,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-22 08:52:27,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 08:52:27,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 08:52:27,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 08:52:27,815 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 08:52:27,815 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 08:52:27,820 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L26-2true [2020-06-22 08:52:27,820 INFO L796 eck$LassoCheckResult]: Loop: 4#L26-2true [22] L26-2-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 (* 2 v_ULTIMATE.start_main_~x~0_8)) (< 0 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~y~0_7 (+ v_ULTIMATE.start_main_~y~0_8 1)) (< v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~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_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L26-2true [2020-06-22 08:52:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:52:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-06-22 08:52:27,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:52:27,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:52:27,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:52:27,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:52:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-06-22 08:52:27,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:52:27,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:52:27,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:52:27,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:52:27,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2020-06-22 08:52:27,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:52:27,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:52:27,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:52:27,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:52:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:52:27,983 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 08:52:27,985 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 08:52:27,985 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 08:52:27,985 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 08:52:27,985 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 08:52:27,985 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:27,985 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 08:52:27,986 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 08:52:27,986 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 08:52:27,986 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 08:52:27,986 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 08:52:28,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:28,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:28,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:28,147 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 08:52:28,147 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:28,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 08:52:28,154 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 08:52:28,190 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 08:52:28,190 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:28,196 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 08:52:28,196 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 08:52:28,223 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 08:52:28,223 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:28,228 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 08:52:28,228 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:52:28,261 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 08:52:28,261 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 08:52:30,312 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 08:52:30,315 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 08:52:30,315 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 08:52:30,315 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 08:52:30,315 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 08:52:30,315 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 08:52:30,315 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 08:52:30,315 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 08:52:30,316 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 08:52:30,316 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 08:52:30,316 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 08:52:30,316 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 08:52:30,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:30,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:30,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 08:52:30,415 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 08:52:30,421 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 08:52:30,423 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,424 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,424 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,425 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,425 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 08:52:30,429 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 08:52:30,430 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 08:52:30,438 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 08:52:30,439 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,440 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,440 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,440 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,440 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 08:52:30,443 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 08:52:30,443 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 08:52:30,451 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 08:52:30,452 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,453 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,453 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 08:52:30,454 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,454 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,454 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 08:52:30,455 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 08:52:30,455 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 08:52:30,466 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 08:52:30,466 INFO L497 LassoAnalysis]: Using template '2-nested'. [2020-06-22 08:52:30,467 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,468 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,468 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,468 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,468 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2020-06-22 08:52:30,472 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-06-22 08:52:30,472 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-06-22 08:52:30,479 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 08:52:30,479 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,480 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,480 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,481 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,481 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2020-06-22 08:52:30,484 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-06-22 08:52:30,484 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-06-22 08:52:30,494 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 08:52:30,495 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 08:52:30,496 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 08:52:30,496 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 08:52:30,496 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 08:52:30,496 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 08:52:30,496 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2020-06-22 08:52:30,498 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-06-22 08:52:30,498 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 08:52:30,511 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 08:52:30,530 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-06-22 08:52:30,531 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 08:52:30,533 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 08:52:30,533 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 08:52:30,533 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 08:52:30,534 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~x~0 + 3 f1 = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-22 08:52:30,536 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 08:52:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:52:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:52:30,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 08:52:30,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 08:52:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:52:30,601 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-22 08:52:30,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 08:52:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:52:30,634 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 08:52:30,639 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-22 08:52:30,641 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states. Second operand 2 states. [2020-06-22 08:52:30,660 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states.. Second operand 2 states. Result 3 states and 3 transitions. Complement of second has 2 states. [2020-06-22 08:52:30,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-06-22 08:52:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-22 08:52:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2020-06-22 08:52:30,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 1 letters. [2020-06-22 08:52:30,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 08:52:30,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 2 letters. Loop has 1 letters. [2020-06-22 08:52:30,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 08:52:30,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 08:52:30,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 08:52:30,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2020-06-22 08:52:30,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 08:52:30,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2020-06-22 08:52:30,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 08:52:30,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 08:52:30,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 08:52:30,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 08:52:30,676 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 08:52:30,677 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 08:52:30,677 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 08:52:30,677 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 08:52:30,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 08:52:30,677 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 08:52:30,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 08:52:30,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 08:52:30 BasicIcfg [2020-06-22 08:52:30,683 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:52:30,684 INFO L168 Benchmark]: Toolchain (without parser) took 3688.89 ms. Allocated memory was 514.9 MB in the beginning and 566.2 MB in the end (delta: 51.4 MB). Free memory was 439.7 MB in the beginning and 435.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 55.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,686 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:52:30,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.90 ms. Allocated memory was 514.9 MB in the beginning and 566.2 MB in the end (delta: 51.4 MB). Free memory was 439.7 MB in the beginning and 535.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 566.2 MB. Free memory was 535.6 MB in the beginning and 534.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,688 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 566.2 MB. Free memory was 534.3 MB in the beginning and 532.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,689 INFO L168 Benchmark]: RCFGBuilder took 194.93 ms. Allocated memory is still 566.2 MB. Free memory was 532.9 MB in the beginning and 521.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,689 INFO L168 Benchmark]: BlockEncodingV2 took 74.04 ms. Allocated memory is still 566.2 MB. Free memory was 521.8 MB in the beginning and 517.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,690 INFO L168 Benchmark]: TraceAbstraction took 152.85 ms. Allocated memory is still 566.2 MB. Free memory was 517.1 MB in the beginning and 508.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,690 INFO L168 Benchmark]: BuchiAutomizer took 2932.81 ms. Allocated memory is still 566.2 MB. Free memory was 508.2 MB in the beginning and 435.7 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 50.3 GB. [2020-06-22 08:52:30,695 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 514.9 MB. Free memory is still 459.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 272.90 ms. Allocated memory was 514.9 MB in the beginning and 566.2 MB in the end (delta: 51.4 MB). Free memory was 439.7 MB in the beginning and 535.6 MB in the end (delta: -95.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 566.2 MB. Free memory was 535.6 MB in the beginning and 534.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 566.2 MB. Free memory was 534.3 MB in the beginning and 532.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 194.93 ms. Allocated memory is still 566.2 MB. Free memory was 532.9 MB in the beginning and 521.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.04 ms. Allocated memory is still 566.2 MB. Free memory was 521.8 MB in the beginning and 517.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 152.85 ms. Allocated memory is still 566.2 MB. Free memory was 517.1 MB in the beginning and 508.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2932.81 ms. Allocated memory is still 566.2 MB. Free memory was 508.2 MB in the beginning and 435.7 MB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 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: 26]: 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 Your program was decomposed into 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has 2-nested ranking function (if -2 * x + 3 > 0 then 1 else 0), (if -2 * x + 3 > 0 then -2 * x + 3 else -2 * x + 2 * y) and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf93 smp100 dnf100 smp100 tf107 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 08:52:23.693 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 08:52:30.926 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check