YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 05:45:10,728 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 05:45:10,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 05:45:10,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 05:45:10,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 05:45:10,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 05:45:10,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 05:45:10,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 05:45:10,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 05:45:10,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 05:45:10,748 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 05:45:10,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 05:45:10,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 05:45:10,750 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 05:45:10,751 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 05:45:10,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 05:45:10,752 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 05:45:10,754 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 05:45:10,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 05:45:10,757 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 05:45:10,758 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 05:45:10,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 05:45:10,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 05:45:10,761 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 05:45:10,762 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 05:45:10,762 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 05:45:10,763 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 05:45:10,764 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 05:45:10,764 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 05:45:10,765 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 05:45:10,765 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 05:45:10,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 05:45:10,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 05:45:10,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 05:45:10,768 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 05:45:10,768 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 05:45:10,768 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 05:45:10,769 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 05:45:10,770 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 05:45:10,770 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 05:45:10,784 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 05:45:10,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 05:45:10,785 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 05:45:10,785 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 05:45:10,786 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 05:45:10,786 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:45:10,786 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 05:45:10,786 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 05:45:10,786 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 05:45:10,786 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:10,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 05:45:10,787 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 05:45:10,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 05:45:10,788 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 05:45:10,788 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 05:45:10,788 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 05:45:10,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 05:45:10,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 05:45:10,789 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 05:45:10,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 05:45:10,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 05:45:10,789 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 05:45:10,789 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 05:45:10,789 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 05:45:10,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 05:45:10,827 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 05:45:10,831 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 05:45:10,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 05:45:10,833 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 05:45:10,833 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 05:45:10,906 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/760da2463b584a7ca3675049f56f6921/FLAGe9278f9dd [2020-06-22 05:45:11,231 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 05:45:11,232 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 05:45:11,238 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/760da2463b584a7ca3675049f56f6921/FLAGe9278f9dd [2020-06-22 05:45:11,636 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/760da2463b584a7ca3675049f56f6921 [2020-06-22 05:45:11,648 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 05:45:11,649 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 05:45:11,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 05:45:11,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 05:45:11,654 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 05:45:11,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e176c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11, skipping insertion in model container [2020-06-22 05:45:11,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 05:45:11,684 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 05:45:11,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:45:11,845 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 05:45:11,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:45:11,935 INFO L195 MainTranslator]: Completed translation [2020-06-22 05:45:11,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11 WrapperNode [2020-06-22 05:45:11,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 05:45:11,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 05:45:11,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 05:45:11,936 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 05:45:11,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 05:45:11,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 05:45:11,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 05:45:11,970 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 05:45:11,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (1/1) ... [2020-06-22 05:45:11,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 05:45:11,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 05:45:11,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 05:45:11,989 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 05:45:11,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (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 05:45:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 05:45:12,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 05:45:12,180 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 05:45:12,181 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 05:45:12,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:45:12 BoogieIcfgContainer [2020-06-22 05:45:12,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 05:45:12,183 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 05:45:12,183 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 05:45:12,185 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 05:45:12,186 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:45:12" (1/1) ... [2020-06-22 05:45:12,200 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 05:45:12,201 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 05:45:12,202 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 05:45:12,203 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 05:45:12,203 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:45:12,205 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 05:45:12,206 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 05:45:12,206 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 05:45:12,221 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 05:45:12,235 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 05:45:12,239 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 05:45:12,241 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:45:12,251 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 05:45:12,253 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-22 05:45:12,254 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:45:12,254 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:45:12,259 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 05:45:12,259 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 05:45:12,259 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:45:12,259 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:45:12,260 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 05:45:12,260 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 05:45:12,260 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-22 05:45:12,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:45:12 BasicIcfg [2020-06-22 05:45:12,261 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 05:45:12,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 05:45:12,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 05:45:12,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 05:45:12,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 05:45:11" (1/4) ... [2020-06-22 05:45:12,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7487d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (2/4) ... [2020-06-22 05:45:12,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7487d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:45:12" (3/4) ... [2020-06-22 05:45:12,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7487d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:45:12" (4/4) ... [2020-06-22 05:45:12,269 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:45:12,278 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 05:45:12,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 05:45:12,302 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 05:45:12,332 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:45:12,333 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 05:45:12,333 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 05:45:12,333 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:45:12,334 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:45:12,334 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:45:12,334 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 05:45:12,334 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:45:12,334 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 05:45:12,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 05:45:12,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 05:45:12,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 05:45:12,405 INFO L451 ceAbstractionStarter]: At program point L19-2(lines 18 24) the Hoare annotation is: true [2020-06-22 05:45:12,405 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 05:45:12,405 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-06-22 05:45:12,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:45:12 BasicIcfg [2020-06-22 05:45:12,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 05:45:12,414 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 05:45:12,414 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 05:45:12,417 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 05:45:12,418 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:45:12,418 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 05:45:11" (1/5) ... [2020-06-22 05:45:12,419 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168277e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,419 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:45:12,420 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:45:11" (2/5) ... [2020-06-22 05:45:12,420 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168277e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,420 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:45:12,420 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:45:12" (3/5) ... [2020-06-22 05:45:12,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168277e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,421 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:45:12,421 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:45:12" (4/5) ... [2020-06-22 05:45:12,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168277e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:45:12, skipping insertion in model container [2020-06-22 05:45:12,421 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:45:12,422 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:45:12" (5/5) ... [2020-06-22 05:45:12,423 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:45:12,450 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:45:12,451 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 05:45:12,451 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 05:45:12,451 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:45:12,451 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:45:12,451 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:45:12,452 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 05:45:12,452 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:45:12,452 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 05:45:12,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 05:45:12,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 05:45:12,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:12,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:12,479 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 05:45:12,479 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:12,479 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 05:45:12,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 05:45:12,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 05:45:12,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:12,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:12,480 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 05:45:12,480 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:12,485 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [48] ULTIMATE.startENTRY-->L19-2: Formula: (< 0 v_ULTIMATE.start_main_~M~0_12) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0] 4#L19-2true [2020-06-22 05:45:12,486 INFO L796 eck$LassoCheckResult]: Loop: 4#L19-2true [44] L19-2-->L19: Formula: (> v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 5#L19true [38] L19-->L19-2: Formula: (and (< v_ULTIMATE.start_main_~M~0_1 v_ULTIMATE.start_main_~x~0_2) (= v_ULTIMATE.start_main_~x~0_1 0)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 4#L19-2true [2020-06-22 05:45:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 1 times [2020-06-22 05:45:12,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:12,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:12,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:12,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:12,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2363, now seen corresponding path program 1 times [2020-06-22 05:45:12,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:12,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:12,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:12,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:12,612 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 05:45:12,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:45:12,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-06-22 05:45:12,619 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 05:45:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 05:45:12,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 05:45:12,636 INFO L87 Difference]: Start difference. First operand 3 states. Second operand 3 states. [2020-06-22 05:45:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:45:12,658 INFO L93 Difference]: Finished difference Result 4 states and 6 transitions. [2020-06-22 05:45:12,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 05:45:12,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4 states and 6 transitions. [2020-06-22 05:45:12,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 05:45:12,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4 states to 4 states and 6 transitions. [2020-06-22 05:45:12,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 05:45:12,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 05:45:12,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 6 transitions. [2020-06-22 05:45:12,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 05:45:12,671 INFO L706 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 05:45:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 6 transitions. [2020-06-22 05:45:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2020-06-22 05:45:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 05:45:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-06-22 05:45:12,701 INFO L729 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 05:45:12,701 INFO L609 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 05:45:12,701 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 05:45:12,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 6 transitions. [2020-06-22 05:45:12,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 05:45:12,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:12,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:12,702 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 05:45:12,702 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:12,703 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L19-2: Formula: (< 0 v_ULTIMATE.start_main_~M~0_12) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0] 17#L19-2 [2020-06-22 05:45:12,703 INFO L796 eck$LassoCheckResult]: Loop: 17#L19-2 [44] L19-2-->L19: Formula: (> v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 18#L19 [43] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1)) (>= v_ULTIMATE.start_main_~M~0_7 v_ULTIMATE.start_main_~x~0_9)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 17#L19-2 [2020-06-22 05:45:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:12,704 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 2 times [2020-06-22 05:45:12,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:12,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:12,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:12,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2368, now seen corresponding path program 1 times [2020-06-22 05:45:12,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:12,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:12,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:45:12,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:12,718 INFO L82 PathProgramCache]: Analyzing trace with hash 77326, now seen corresponding path program 1 times [2020-06-22 05:45:12,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:12,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:12,763 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:12,764 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:12,764 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:12,765 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:12,765 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:45:12,765 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:12,765 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:12,765 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:12,765 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 05:45:12,766 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:12,766 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:12,783 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 05:45:12,793 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 05:45:12,803 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 05:45:12,864 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:12,865 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 05:45:12,876 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:12,876 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:12,909 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:12,909 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 05:45:12,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:12,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:12,944 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:12,945 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 05:45:12,952 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:12,952 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 05:45:12,984 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:45:12,984 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:13,180 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 05:45:13,182 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:13,182 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:13,183 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:13,183 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:13,183 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 05:45:13,183 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 05:45:13,183 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:13,183 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:13,183 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 05:45:13,183 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:13,184 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:13,186 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 05:45:13,190 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 05:45:13,197 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 05:45:13,261 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:13,266 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 05:45:13,268 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 05:45:13,270 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:13,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:13,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:13,270 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:13,275 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 05:45:13,275 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 05:45:13,282 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:13,283 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 05:45:13,283 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:13,284 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:45:13,284 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:13,284 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:13,284 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:13,285 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:45:13,285 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:45:13,292 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 05:45:13,299 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 05:45:13,299 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 05:45:13,301 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 05:45:13,301 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 05:45:13,302 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 05:45:13,302 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~M~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 05:45:13,304 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 05:45:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:13,361 WARN L254 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 05:45:13,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:13,373 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 05:45:13,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:13,375 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 05:45:13,377 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 05:45:13,379 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 05:45:13,380 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-22 05:45:13,405 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 10 states and 17 transitions. Complement of second has 4 states. [2020-06-22 05:45:13,405 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 05:45:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 05:45:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-22 05:45:13,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 05:45:13,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 05:45:13,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 05:45:13,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 17 transitions. [2020-06-22 05:45:13,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 05:45:13,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 15 transitions. [2020-06-22 05:45:13,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 05:45:13,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-06-22 05:45:13,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 15 transitions. [2020-06-22 05:45:13,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:45:13,417 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-06-22 05:45:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 15 transitions. [2020-06-22 05:45:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-06-22 05:45:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 05:45:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2020-06-22 05:45:13,419 INFO L729 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-06-22 05:45:13,419 INFO L609 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-06-22 05:45:13,419 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 05:45:13,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 14 transitions. [2020-06-22 05:45:13,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 05:45:13,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:13,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:13,420 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 05:45:13,420 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:13,421 INFO L794 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L19-2: Formula: (< 0 v_ULTIMATE.start_main_~M~0_12) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0] 59#L19-2 [45] L19-2-->L19: Formula: (< v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 65#L19 [38] L19-->L19-2: Formula: (and (< v_ULTIMATE.start_main_~M~0_1 v_ULTIMATE.start_main_~x~0_2) (= v_ULTIMATE.start_main_~x~0_1 0)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 60#L19-2 [2020-06-22 05:45:13,421 INFO L796 eck$LassoCheckResult]: Loop: 60#L19-2 [44] L19-2-->L19: Formula: (> v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 61#L19 [43] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1)) (>= v_ULTIMATE.start_main_~M~0_7 v_ULTIMATE.start_main_~x~0_9)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 60#L19-2 [2020-06-22 05:45:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 77352, now seen corresponding path program 1 times [2020-06-22 05:45:13,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:13,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2368, now seen corresponding path program 2 times [2020-06-22 05:45:13,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:13,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,435 INFO L82 PathProgramCache]: Analyzing trace with hash 74336679, now seen corresponding path program 1 times [2020-06-22 05:45:13,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:45:13,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,461 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:13,461 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:13,461 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:13,461 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:13,461 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:45:13,462 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:13,462 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:13,462 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:13,462 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 05:45:13,462 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:13,462 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:13,464 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 05:45:13,467 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 05:45:13,470 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 05:45:13,512 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:13,512 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 05:45:13,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:13,520 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:13,548 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:13,548 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 05:45:13,555 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:13,555 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:13,582 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:13,582 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 05:45:13,588 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:13,589 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:13,620 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:45:13,620 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:13,806 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 05:45:13,809 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:13,809 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:13,809 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:13,809 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:13,809 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 05:45:13,809 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 05:45:13,810 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:13,810 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:13,810 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 05:45:13,810 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:13,810 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:13,812 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 05:45:13,815 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 05:45:13,821 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 05:45:13,861 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:13,861 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 05:45:13,862 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 05:45:13,863 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:13,863 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:13,863 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:13,863 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:13,865 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 05:45:13,866 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 05:45:13,871 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:13,871 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 05:45:13,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:13,872 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:45:13,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:13,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:13,872 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:13,873 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:45:13,873 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:45:13,878 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 05:45:13,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 05:45:13,882 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 05:45:13,883 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 05:45:13,883 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 05:45:13,883 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 05:45:13,883 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~M~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 05:45:13,884 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 05:45:13,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:13,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 05:45:13,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:13,913 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 05:45:13,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:13,914 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 05:45:13,914 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 05:45:13,914 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 05:45:13,914 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 14 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-06-22 05:45:13,932 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 14 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 11 states and 20 transitions. Complement of second has 4 states. [2020-06-22 05:45:13,933 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 05:45:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 05:45:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-22 05:45:13,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 05:45:13,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-22 05:45:13,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-22 05:45:13,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:13,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 20 transitions. [2020-06-22 05:45:13,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-22 05:45:13,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 18 transitions. [2020-06-22 05:45:13,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 05:45:13,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 05:45:13,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2020-06-22 05:45:13,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:45:13,939 INFO L706 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-06-22 05:45:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2020-06-22 05:45:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 5. [2020-06-22 05:45:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 05:45:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-06-22 05:45:13,940 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 9 transitions. [2020-06-22 05:45:13,940 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 9 transitions. [2020-06-22 05:45:13,940 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 05:45:13,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 9 transitions. [2020-06-22 05:45:13,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 05:45:13,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:13,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:13,941 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 05:45:13,941 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:13,942 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L19-2: Formula: (< 0 v_ULTIMATE.start_main_~M~0_12) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0] 112#L19-2 [2020-06-22 05:45:13,942 INFO L796 eck$LassoCheckResult]: Loop: 112#L19-2 [45] L19-2-->L19: Formula: (< v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 114#L19 [38] L19-->L19-2: Formula: (and (< v_ULTIMATE.start_main_~M~0_1 v_ULTIMATE.start_main_~x~0_2) (= v_ULTIMATE.start_main_~x~0_1 0)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 112#L19-2 [2020-06-22 05:45:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 3 times [2020-06-22 05:45:13,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:13,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2394, now seen corresponding path program 1 times [2020-06-22 05:45:13,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:45:13,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash 77352, now seen corresponding path program 2 times [2020-06-22 05:45:13,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:13,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:13,979 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:13,979 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:13,979 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:13,979 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:13,979 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:45:13,980 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:13,980 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:13,980 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:13,980 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Lasso [2020-06-22 05:45:13,980 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:13,980 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:13,982 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 05:45:13,985 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 05:45:13,989 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 05:45:13,994 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 05:45:13,996 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 05:45:14,005 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 05:45:14,076 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:14,077 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:14,083 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:14,087 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:14,087 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,117 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:14,117 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:14,121 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:14,121 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,153 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:14,154 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:14,181 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:14,181 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,188 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:14,188 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:14,192 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:45:14,192 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,222 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:45:14,223 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:45:14,258 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:45:14,258 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:45:14,389 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 05:45:14,393 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:45:14,393 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:45:14,393 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:45:14,393 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:45:14,393 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 05:45:14,393 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 05:45:14,394 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:45:14,394 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:45:14,394 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Lasso [2020-06-22 05:45:14,394 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:45:14,394 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:45:14,396 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 05:45:14,398 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 05:45:14,401 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 05:45:14,405 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 05:45:14,408 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 05:45:14,415 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 05:45:14,462 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:45:14,462 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 05:45:14,463 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 05:45:14,464 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:14,464 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:45:14,464 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:14,464 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:14,464 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:14,465 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:45:14,465 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:45:14,466 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:14,466 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 05:45:14,466 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:14,467 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:45:14,467 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:14,467 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:14,467 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:14,467 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:45:14,468 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:45:14,468 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:14,468 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 05:45:14,469 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:14,469 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:45:14,469 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:14,469 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:14,469 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:14,470 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:45:14,470 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:45:14,471 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:14,471 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 05:45:14,472 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:14,472 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:14,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:14,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:14,474 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 05:45:14,474 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 05:45:14,477 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:45:14,478 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 05:45:14,478 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:45:14,478 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:45:14,478 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:45:14,478 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:45:14,481 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 05:45:14,481 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 05:45:14,498 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 05:45:14,510 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 05:45:14,510 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 05:45:14,511 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 05:45:14,513 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-06-22 05:45:14,513 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 05:45:14,513 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2020-06-22 05:45:14,517 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-06-22 05:45:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:14,548 WARN L254 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-22 05:45:14,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:14,554 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 05:45:14,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:45:14,578 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 05:45:14,610 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 05:45:14,610 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 3 loop predicates [2020-06-22 05:45:14,610 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 9 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-06-22 05:45:14,700 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 9 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 45 transitions. Complement of second has 8 states. [2020-06-22 05:45:14,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-06-22 05:45:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 05:45:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-06-22 05:45:14,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 05:45:14,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:14,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 05:45:14,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:14,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 05:45:14,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:45:14,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 45 transitions. [2020-06-22 05:45:14,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 05:45:14,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 13 states and 25 transitions. [2020-06-22 05:45:14,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 05:45:14,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 05:45:14,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 25 transitions. [2020-06-22 05:45:14,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:45:14,706 INFO L706 BuchiCegarLoop]: Abstraction has 13 states and 25 transitions. [2020-06-22 05:45:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 25 transitions. [2020-06-22 05:45:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2020-06-22 05:45:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-06-22 05:45:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2020-06-22 05:45:14,708 INFO L729 BuchiCegarLoop]: Abstraction has 9 states and 17 transitions. [2020-06-22 05:45:14,708 INFO L609 BuchiCegarLoop]: Abstraction has 9 states and 17 transitions. [2020-06-22 05:45:14,709 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 05:45:14,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 17 transitions. [2020-06-22 05:45:14,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 05:45:14,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:45:14,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:45:14,710 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-06-22 05:45:14,710 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 05:45:14,710 INFO L794 eck$LassoCheckResult]: Stem: 186#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L19-2: Formula: (< 0 v_ULTIMATE.start_main_~M~0_12) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0] 187#L19-2 [44] L19-2-->L19: Formula: (> v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 188#L19 [43] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1)) (>= v_ULTIMATE.start_main_~M~0_7 v_ULTIMATE.start_main_~x~0_9)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 194#L19-2 [45] L19-2-->L19: Formula: (< v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 192#L19 [2020-06-22 05:45:14,710 INFO L796 eck$LassoCheckResult]: Loop: 192#L19 [38] L19-->L19-2: Formula: (and (< v_ULTIMATE.start_main_~M~0_1 v_ULTIMATE.start_main_~x~0_2) (= v_ULTIMATE.start_main_~x~0_1 0)) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 193#L19-2 [45] L19-2-->L19: Formula: (< v_ULTIMATE.start_main_~M~0_11 v_ULTIMATE.start_main_~x~0_11) InVars {ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~M~0=v_ULTIMATE.start_main_~M~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 192#L19 [2020-06-22 05:45:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:14,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2397151, now seen corresponding path program 1 times [2020-06-22 05:45:14,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:14,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:14,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:14,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:45:14,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:45:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:45:14,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:45:14,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 05:45:14,731 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-22 05:45:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:45:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2184, now seen corresponding path program 2 times [2020-06-22 05:45:14,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:45:14,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:45:14,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:14,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:45:14,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:45:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:45:14,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 05:45:14,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 05:45:14,752 INFO L87 Difference]: Start difference. First operand 9 states and 17 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-06-22 05:45:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:45:14,772 INFO L93 Difference]: Finished difference Result 7 states and 11 transitions. [2020-06-22 05:45:14,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 05:45:14,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 11 transitions. [2020-06-22 05:45:14,774 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 05:45:14,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2020-06-22 05:45:14,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 05:45:14,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 05:45:14,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 05:45:14,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 05:45:14,775 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 05:45:14,775 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 05:45:14,775 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 05:45:14,775 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 05:45:14,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 05:45:14,776 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 05:45:14,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 05:45:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:45:14 BasicIcfg [2020-06-22 05:45:14,782 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 05:45:14,782 INFO L168 Benchmark]: Toolchain (without parser) took 3133.60 ms. Allocated memory was 649.6 MB in the beginning and 674.2 MB in the end (delta: 24.6 MB). Free memory was 565.4 MB in the beginning and 384.4 MB in the end (delta: 181.0 MB). Peak memory consumption was 205.6 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,784 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 586.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 05:45:14,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.22 ms. Allocated memory was 649.6 MB in the beginning and 674.2 MB in the end (delta: 24.6 MB). Free memory was 565.4 MB in the beginning and 641.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.64 ms. Allocated memory is still 674.2 MB. Free memory was 641.7 MB in the beginning and 638.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,785 INFO L168 Benchmark]: Boogie Preprocessor took 18.86 ms. Allocated memory is still 674.2 MB. Free memory was 638.6 MB in the beginning and 637.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,786 INFO L168 Benchmark]: RCFGBuilder took 193.10 ms. Allocated memory is still 674.2 MB. Free memory was 637.2 MB in the beginning and 624.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,786 INFO L168 Benchmark]: BlockEncodingV2 took 78.24 ms. Allocated memory is still 674.2 MB. Free memory was 624.3 MB in the beginning and 618.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,787 INFO L168 Benchmark]: TraceAbstraction took 151.86 ms. Allocated memory is still 674.2 MB. Free memory was 618.9 MB in the beginning and 608.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,787 INFO L168 Benchmark]: BuchiAutomizer took 2367.68 ms. Allocated memory is still 674.2 MB. Free memory was 608.3 MB in the beginning and 384.4 MB in the end (delta: 223.9 MB). Peak memory consumption was 223.9 MB. Max. memory is 50.3 GB. [2020-06-22 05:45:14,792 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, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 586.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 285.22 ms. Allocated memory was 649.6 MB in the beginning and 674.2 MB in the end (delta: 24.6 MB). Free memory was 565.4 MB in the beginning and 641.7 MB in the end (delta: -76.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.64 ms. Allocated memory is still 674.2 MB. Free memory was 641.7 MB in the beginning and 638.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.86 ms. Allocated memory is still 674.2 MB. Free memory was 638.6 MB in the beginning and 637.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 193.10 ms. Allocated memory is still 674.2 MB. Free memory was 637.2 MB in the beginning and 624.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 78.24 ms. Allocated memory is still 674.2 MB. Free memory was 624.3 MB in the beginning and 618.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 151.86 ms. Allocated memory is still 674.2 MB. Free memory was 618.9 MB in the beginning and 608.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2367.68 ms. Allocated memory is still 674.2 MB. Free memory was 608.3 MB in the beginning and 384.4 MB in the end (delta: 223.9 MB). Peak memory consumption was 223.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 18]: 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, 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 5 terminating modules (2 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function M + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function M + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * M + x and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax223 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf108 neg100 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 05:45:08.429 ----------------------------------------------- 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 05:45:15.051 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check