YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 11:12:52,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 11:12:52,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 11:12:52,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 11:12:52,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 11:12:52,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 11:12:52,606 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 11:12:52,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 11:12:52,609 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 11:12:52,610 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 11:12:52,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 11:12:52,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 11:12:52,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 11:12:52,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 11:12:52,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 11:12:52,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 11:12:52,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 11:12:52,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 11:12:52,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 11:12:52,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 11:12:52,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 11:12:52,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 11:12:52,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 11:12:52,625 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 11:12:52,625 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 11:12:52,626 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 11:12:52,626 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 11:12:52,627 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 11:12:52,627 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 11:12:52,628 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 11:12:52,629 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 11:12:52,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 11:12:52,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 11:12:52,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 11:12:52,631 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 11:12:52,631 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 11:12:52,631 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 11:12:52,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 11:12:52,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 11:12:52,633 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 11:12:52,647 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 11:12:52,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 11:12:52,649 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 11:12:52,649 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 11:12:52,649 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 11:12:52,649 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 11:12:52,650 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 11:12:52,650 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 11:12:52,650 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 11:12:52,650 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 11:12:52,650 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 11:12:52,650 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 11:12:52,651 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 11:12:52,651 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 11:12:52,651 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:52,651 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 11:12:52,651 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 11:12:52,652 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 11:12:52,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 11:12:52,652 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 11:12:52,652 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 11:12:52,652 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 11:12:52,653 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 11:12:52,653 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 11:12:52,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 11:12:52,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 11:12:52,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 11:12:52,653 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 11:12:52,654 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 11:12:52,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 11:12:52,692 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 11:12:52,696 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 11:12:52,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 11:12:52,697 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 11:12:52,698 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 11:12:52,767 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/ea20a1c5340a457287add386d9630f83/FLAG31e1a3511 [2020-06-22 11:12:53,110 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 11:12:53,110 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 11:12:53,117 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/ea20a1c5340a457287add386d9630f83/FLAG31e1a3511 [2020-06-22 11:12:53,505 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/ea20a1c5340a457287add386d9630f83 [2020-06-22 11:12:53,516 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 11:12:53,518 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 11:12:53,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 11:12:53,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 11:12:53,522 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 11:12:53,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364b55dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53, skipping insertion in model container [2020-06-22 11:12:53,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 11:12:53,551 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 11:12:53,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 11:12:53,710 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 11:12:53,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 11:12:53,800 INFO L195 MainTranslator]: Completed translation [2020-06-22 11:12:53,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53 WrapperNode [2020-06-22 11:12:53,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 11:12:53,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 11:12:53,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 11:12:53,802 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 11:12:53,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 11:12:53,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 11:12:53,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 11:12:53,839 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 11:12:53,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (1/1) ... [2020-06-22 11:12:53,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 11:12:53,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 11:12:53,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 11:12:53,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 11:12:53,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (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 11:12:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 11:12:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 11:12:54,060 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 11:12:54,060 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 11:12:54,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:12:54 BoogieIcfgContainer [2020-06-22 11:12:54,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 11:12:54,062 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 11:12:54,062 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 11:12:54,065 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 11:12:54,066 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:12:54" (1/1) ... [2020-06-22 11:12:54,081 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 11:12:54,082 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 11:12:54,083 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 11:12:54,083 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 11:12:54,084 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 11:12:54,086 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 11:12:54,087 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 11:12:54,087 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 11:12:54,103 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 11:12:54,111 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-22 11:12:54,116 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 11:12:54,118 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 11:12:54,147 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-06-22 11:12:54,150 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 11:12:54,167 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 11:12:54,167 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 11:12:54,167 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 11:12:54,167 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 11:12:54,168 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-22 11:12:54,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 11:12:54 BasicIcfg [2020-06-22 11:12:54,168 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 11:12:54,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 11:12:54,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 11:12:54,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 11:12:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 11:12:53" (1/4) ... [2020-06-22 11:12:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d112ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (2/4) ... [2020-06-22 11:12:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d112ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:12:54" (3/4) ... [2020-06-22 11:12:54,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d112ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 11:12:54" (4/4) ... [2020-06-22 11:12:54,178 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 11:12:54,188 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 11:12:54,197 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 11:12:54,216 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 11:12:54,246 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 11:12:54,247 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 11:12:54,247 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 11:12:54,247 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 11:12:54,248 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 11:12:54,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 11:12:54,248 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 11:12:54,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 11:12:54,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 11:12:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 11:12:54,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 11:12:54,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 11:12:54,322 INFO L451 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: true [2020-06-22 11:12:54,323 INFO L451 ceAbstractionStarter]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-06-22 11:12:54,323 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 11:12:54,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:12:54 BasicIcfg [2020-06-22 11:12:54,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 11:12:54,332 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 11:12:54,332 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 11:12:54,335 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 11:12:54,336 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 11:12:54,336 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 11:12:53" (1/5) ... [2020-06-22 11:12:54,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23aac5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,337 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 11:12:54,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 11:12:53" (2/5) ... [2020-06-22 11:12:54,338 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23aac5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,338 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 11:12:54,338 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:12:54" (3/5) ... [2020-06-22 11:12:54,338 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23aac5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,339 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 11:12:54,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 11:12:54" (4/5) ... [2020-06-22 11:12:54,339 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23aac5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 11:12:54, skipping insertion in model container [2020-06-22 11:12:54,339 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 11:12:54,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:12:54" (5/5) ... [2020-06-22 11:12:54,341 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 11:12:54,368 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 11:12:54,369 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 11:12:54,369 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 11:12:54,369 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 11:12:54,369 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 11:12:54,369 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 11:12:54,369 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 11:12:54,370 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 11:12:54,370 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 11:12:54,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 11:12:54,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 11:12:54,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 11:12:54,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 11:12:54,396 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 11:12:54,396 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 11:12:54,396 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 11:12:54,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 11:12:54,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 11:12:54,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 11:12:54,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 11:12:54,397 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 11:12:54,397 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 11:12:54,402 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1) (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 3#L17-2true [2020-06-22 11:12:54,403 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [33] L17-2-->L19-2: Formula: (and (< 0 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~j~0_7 v_ULTIMATE.start_main_~N~0_6)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 5#L19-2true [45] L19-2-->L17-2: Formula: (and (<= v_ULTIMATE.start_main_~j~0_8 0) (= (+ v_ULTIMATE.start_main_~i~0_12 (- 1)) v_ULTIMATE.start_main_~i~0_11)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 3#L17-2true [2020-06-22 11:12:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-06-22 11:12:54,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:54,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:54,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:54,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2029, now seen corresponding path program 1 times [2020-06-22 11:12:54,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:54,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:54,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:54,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:54,498 INFO L82 PathProgramCache]: Analyzing trace with hash 63533, now seen corresponding path program 1 times [2020-06-22 11:12:54,498 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:54,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:54,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:54,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 11:12:54,576 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 11:12:54,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 11:12:54,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 11:12:54,617 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 11:12:54,618 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 11:12:54,619 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 11:12:54,619 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 11:12:54,619 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 11:12:54,619 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:54,619 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 11:12:54,619 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 11:12:54,620 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 11:12:54,620 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 11:12:54,620 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 11:12:54,639 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 11:12:54,648 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 11:12:54,652 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 11:12:54,660 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 11:12:54,764 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 11:12:54,764 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 11:12:54,771 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 11:12:54,771 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 11:12:54,805 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 11:12:54,805 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 11:12:54,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 11:12:54,811 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 11:12:54,839 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 11:12:54,839 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 11:12:54,848 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 11:12:54,848 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 11:12:54,878 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 11:12:54,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 11:12:54,909 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 11:12:54,911 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 11:12:54,911 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 11:12:54,911 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 11:12:54,911 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 11:12:54,912 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 11:12:54,912 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 11:12:54,912 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 11:12:54,912 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 11:12:54,912 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 11:12:54,912 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 11:12:54,912 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 11:12:54,914 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 11:12:54,922 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 11:12:54,930 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 11:12:54,934 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 11:12:55,007 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 11:12:55,013 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 11:12:55,015 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 11:12:55,016 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 11:12:55,016 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 11:12:55,017 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 11:12:55,017 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 11:12:55,017 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 11:12:55,020 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 11:12:55,020 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 11:12:55,024 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 11:12:55,025 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 11:12:55,025 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 11:12:55,025 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 11:12:55,026 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 11:12:55,026 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 11:12:55,026 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 11:12:55,027 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 11:12:55,027 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 11:12:55,033 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 11:12:55,036 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 11:12:55,036 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 11:12:55,038 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 11:12:55,039 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 11:12:55,039 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 11:12:55,039 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-06-22 11:12:55,041 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 11:12:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 11:12:55,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 11:12:55,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 11:12:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 11:12:55,079 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 11:12:55,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 11:12:55,095 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 11:12:55,120 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 11:12:55,125 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 11:12:55,126 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 11:12:55,152 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-06-22 11:12:55,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 11:12:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 11:12:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-06-22 11:12:55,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 11:12:55,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 11:12:55,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 11:12:55,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-06-22 11:12:55,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 11:12:55,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-06-22 11:12:55,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-22 11:12:55,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 11:12:55,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-06-22 11:12:55,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 11:12:55,172 INFO L706 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-06-22 11:12:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-06-22 11:12:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-06-22 11:12:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 11:12:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-22 11:12:55,201 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 11:12:55,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 11:12:55,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 11:12:55,204 INFO L87 Difference]: Start difference. First operand 5 states and 8 transitions. Second operand 4 states. [2020-06-22 11:12:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 11:12:55,233 INFO L93 Difference]: Finished difference Result 9 states and 13 transitions. [2020-06-22 11:12:55,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 11:12:55,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-06-22 11:12:55,236 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-06-22 11:12:55,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-06-22 11:12:55,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 11:12:55,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 11:12:55,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-22 11:12:55,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 11:12:55,237 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-22 11:12:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-22 11:12:55,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-06-22 11:12:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-22 11:12:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-06-22 11:12:55,239 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-06-22 11:12:55,239 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-06-22 11:12:55,239 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 11:12:55,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-06-22 11:12:55,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 11:12:55,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 11:12:55,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 11:12:55,240 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 11:12:55,240 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 11:12:55,241 INFO L794 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1) (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 60#L17-2 [33] L17-2-->L19-2: Formula: (and (< 0 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~j~0_7 v_ULTIMATE.start_main_~N~0_6)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 62#L19-2 [2020-06-22 11:12:55,241 INFO L796 eck$LassoCheckResult]: Loop: 62#L19-2 [38] L19-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_5 (+ v_ULTIMATE.start_main_~j~0_6 (- 1))) (< 0 v_ULTIMATE.start_main_~j~0_6)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 62#L19-2 [2020-06-22 11:12:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2020-06-22 11:12:55,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:55,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:55,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:55,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-06-22 11:12:55,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:55,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:55,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:55,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash 63526, now seen corresponding path program 1 times [2020-06-22 11:12:55,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 11:12:55,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 11:12:55,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 11:12:55,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 11:12:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 11:12:55,272 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 11:12:55,272 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 11:12:55,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 11:12:55,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 11:12:55,272 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 11:12:55,273 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:55,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 11:12:55,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 11:12:55,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 11:12:55,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 11:12:55,273 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 11:12:55,274 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 11:12:55,278 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 11:12:55,283 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 11:12:55,317 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 11:12:55,317 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:55,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 11:12:55,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 11:12:55,347 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 11:12:55,347 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:55,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 11:12:55,353 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 11:12:55,385 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 11:12:55,385 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 11:12:55,416 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 11:12:55,418 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 11:12:55,419 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 11:12:55,419 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 11:12:55,419 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 11:12:55,419 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 11:12:55,419 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 11:12:55,419 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 11:12:55,419 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 11:12:55,420 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 11:12:55,420 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 11:12:55,420 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 11:12:55,422 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 11:12:55,429 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 11:12:55,432 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 11:12:55,479 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 11:12:55,479 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 11:12:55,480 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 11:12:55,480 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 11:12:55,480 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 11:12:55,481 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 11:12:55,481 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 11:12:55,481 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 11:12:55,482 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 11:12:55,482 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 11:12:55,487 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 11:12:55,490 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 11:12:55,490 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 11:12:55,490 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 11:12:55,491 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 11:12:55,491 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 11:12:55,491 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-06-22 11:12:55,491 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 11:12:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 11:12:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 11:12:55,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 11:12:55,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 11:12:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 11:12:55,535 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 11:12:55,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 11:12:55,536 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 11:12:55,536 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 11:12:55,536 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 1 loop predicates [2020-06-22 11:12:55,537 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-06-22 11:12:55,550 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 8 states and 11 transitions. Complement of second has 4 states. [2020-06-22 11:12:55,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 11:12:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-22 11:12:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 11:12:55,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 1 letters. [2020-06-22 11:12:55,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-06-22 11:12:55,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-22 11:12:55,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 11:12:55,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-06-22 11:12:55,554 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 11:12:55,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-06-22 11:12:55,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 11:12:55,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 11:12:55,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 11:12:55,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 11:12:55,555 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 11:12:55,555 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 11:12:55,555 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 11:12:55,556 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 11:12:55,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 11:12:55,556 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 11:12:55,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 11:12:55,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 11:12:55 BasicIcfg [2020-06-22 11:12:55,563 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 11:12:55,563 INFO L168 Benchmark]: Toolchain (without parser) took 2046.50 ms. Allocated memory was 649.6 MB in the beginning and 667.4 MB in the end (delta: 17.8 MB). Free memory was 564.2 MB in the beginning and 471.1 MB in the end (delta: 93.1 MB). Peak memory consumption was 110.9 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,565 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 11:12:55,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.57 ms. Allocated memory was 649.6 MB in the beginning and 667.4 MB in the end (delta: 17.8 MB). Free memory was 564.2 MB in the beginning and 635.3 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.12 ms. Allocated memory is still 667.4 MB. Free memory was 634.2 MB in the beginning and 633.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,567 INFO L168 Benchmark]: Boogie Preprocessor took 20.15 ms. Allocated memory is still 667.4 MB. Free memory was 633.2 MB in the beginning and 630.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,567 INFO L168 Benchmark]: RCFGBuilder took 202.20 ms. Allocated memory is still 667.4 MB. Free memory was 630.3 MB in the beginning and 616.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,568 INFO L168 Benchmark]: BlockEncodingV2 took 106.42 ms. Allocated memory is still 667.4 MB. Free memory was 616.8 MB in the beginning and 611.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,569 INFO L168 Benchmark]: TraceAbstraction took 161.73 ms. Allocated memory is still 667.4 MB. Free memory was 610.0 MB in the beginning and 601.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,569 INFO L168 Benchmark]: BuchiAutomizer took 1231.05 ms. Allocated memory is still 667.4 MB. Free memory was 601.3 MB in the beginning and 471.1 MB in the end (delta: 130.2 MB). Peak memory consumption was 130.2 MB. Max. memory is 50.3 GB. [2020-06-22 11:12:55,573 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 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 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 282.57 ms. Allocated memory was 649.6 MB in the beginning and 667.4 MB in the end (delta: 17.8 MB). Free memory was 564.2 MB in the beginning and 635.3 MB in the end (delta: -71.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 37.12 ms. Allocated memory is still 667.4 MB. Free memory was 634.2 MB in the beginning and 633.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.15 ms. Allocated memory is still 667.4 MB. Free memory was 633.2 MB in the beginning and 630.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * RCFGBuilder took 202.20 ms. Allocated memory is still 667.4 MB. Free memory was 630.3 MB in the beginning and 616.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 106.42 ms. Allocated memory is still 667.4 MB. Free memory was 616.8 MB in the beginning and 611.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 161.73 ms. Allocated memory is still 667.4 MB. Free memory was 610.0 MB in the beginning and 601.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1231.05 ms. Allocated memory is still 667.4 MB. Free memory was 601.3 MB in the beginning and 471.1 MB in the end (delta: 130.2 MB). Peak memory consumption was 130.2 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 14 SDslu, 2 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 11:12:50.261 ----------------------------------------------- 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 11:12:55.808 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check