NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 01:20:40,922 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 01:20:40,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 01:20:40,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 01:20:40,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 01:20:40,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 01:20:40,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 01:20:40,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 01:20:40,941 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 01:20:40,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 01:20:40,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 01:20:40,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 01:20:40,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 01:20:40,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 01:20:40,946 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 01:20:40,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 01:20:40,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 01:20:40,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 01:20:40,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 01:20:40,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 01:20:40,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 01:20:40,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 01:20:40,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 01:20:40,956 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 01:20:40,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 01:20:40,957 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 01:20:40,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 01:20:40,959 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 01:20:40,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 01:20:40,960 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 01:20:40,960 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 01:20:40,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 01:20:40,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 01:20:40,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 01:20:40,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 01:20:40,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 01:20:40,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 01:20:40,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 01:20:40,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 01:20:40,965 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 01:20:40,980 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 01:20:40,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 01:20:40,981 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 01:20:40,981 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 01:20:40,981 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 01:20:40,982 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:20:40,982 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 01:20:40,982 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 01:20:40,982 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 01:20:40,982 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 01:20:40,983 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 01:20:40,983 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 01:20:40,983 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 01:20:40,983 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 01:20:40,983 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:20:40,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 01:20:40,984 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 01:20:40,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 01:20:40,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 01:20:40,984 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 01:20:40,984 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 01:20:40,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 01:20:40,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 01:20:40,985 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 01:20:40,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 01:20:40,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 01:20:40,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 01:20:40,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 01:20:40,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 01:20:41,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 01:20:41,026 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 01:20:41,029 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 01:20:41,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 01:20:41,031 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 01:20:41,032 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 01:20:41,134 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/2b49c46d03044224b8e4ca856eddf58d/FLAG9690dd943 [2020-06-22 01:20:41,474 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 01:20:41,474 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 01:20:41,481 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/2b49c46d03044224b8e4ca856eddf58d/FLAG9690dd943 [2020-06-22 01:20:41,870 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/2b49c46d03044224b8e4ca856eddf58d [2020-06-22 01:20:41,882 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 01:20:41,883 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 01:20:41,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 01:20:41,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 01:20:41,889 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 01:20:41,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:20:41" (1/1) ... [2020-06-22 01:20:41,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a945a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:41, skipping insertion in model container [2020-06-22 01:20:41,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 01:20:41" (1/1) ... [2020-06-22 01:20:41,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 01:20:41,919 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 01:20:42,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:20:42,079 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 01:20:42,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 01:20:42,162 INFO L195 MainTranslator]: Completed translation [2020-06-22 01:20:42,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42 WrapperNode [2020-06-22 01:20:42,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 01:20:42,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 01:20:42,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 01:20:42,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 01:20:42,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 01:20:42,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 01:20:42,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 01:20:42,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 01:20:42,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 01:20:42,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 01:20:42,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 01:20:42,218 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 01:20:42,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (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 01:20:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 01:20:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 01:20:42,413 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 01:20:42,414 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 01:20:42,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:20:42 BoogieIcfgContainer [2020-06-22 01:20:42,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 01:20:42,416 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 01:20:42,416 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 01:20:42,418 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 01:20:42,418 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:20:42" (1/1) ... [2020-06-22 01:20:42,434 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-06-22 01:20:42,435 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 01:20:42,436 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 01:20:42,437 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 01:20:42,437 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 01:20:42,439 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 01:20:42,440 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 01:20:42,440 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 01:20:42,456 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 01:20:42,470 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 01:20:42,474 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 01:20:42,476 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:20:42,487 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 01:20:42,489 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 01:20:42,490 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 01:20:42,490 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 01:20:42,491 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 01:20:42,491 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 01:20:42,491 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 9 edges [2020-06-22 01:20:42,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:20:42 BasicIcfg [2020-06-22 01:20:42,492 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 01:20:42,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 01:20:42,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 01:20:42,497 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 01:20:42,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 01:20:41" (1/4) ... [2020-06-22 01:20:42,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6103f676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (2/4) ... [2020-06-22 01:20:42,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6103f676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:20:42" (3/4) ... [2020-06-22 01:20:42,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6103f676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:20:42" (4/4) ... [2020-06-22 01:20:42,501 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:20:42,511 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 01:20:42,520 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 01:20:42,537 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 01:20:42,565 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:20:42,566 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 01:20:42,566 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 01:20:42,566 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:20:42,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:20:42,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:20:42,567 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 01:20:42,567 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:20:42,567 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 01:20:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-06-22 01:20:42,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 01:20:42,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-06-22 01:20:42,638 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-06-22 01:20:42,638 INFO L451 ceAbstractionStarter]: At program point L17-2(lines 9 21) the Hoare annotation is: true [2020-06-22 01:20:42,639 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 01:20:42,639 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-06-22 01:20:42,639 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 20) no Hoare annotation was computed. [2020-06-22 01:20:42,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:20:42 BasicIcfg [2020-06-22 01:20:42,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 01:20:42,648 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 01:20:42,648 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 01:20:42,652 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 01:20:42,653 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:20:42,653 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 01:20:41" (1/5) ... [2020-06-22 01:20:42,653 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4785e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,654 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:20:42,654 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 01:20:42" (2/5) ... [2020-06-22 01:20:42,654 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4785e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,655 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:20:42,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:20:42" (3/5) ... [2020-06-22 01:20:42,655 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4785e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,655 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:20:42,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 01:20:42" (4/5) ... [2020-06-22 01:20:42,656 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4785e598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:20:42, skipping insertion in model container [2020-06-22 01:20:42,656 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 01:20:42,656 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:20:42" (5/5) ... [2020-06-22 01:20:42,658 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 01:20:42,686 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 01:20:42,686 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 01:20:42,687 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 01:20:42,687 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 01:20:42,687 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 01:20:42,687 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 01:20:42,687 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 01:20:42,687 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 01:20:42,687 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 01:20:42,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 01:20:42,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:20:42,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:20:42,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:20:42,715 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:20:42,715 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 01:20:42,715 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 01:20:42,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 01:20:42,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 01:20:42,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:20:42,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:20:42,717 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:20:42,717 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 01:20:42,722 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue [40] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 3#L17-2true [2020-06-22 01:20:42,723 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [52] L17-2-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 4#L10true [49] L10-->L17: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 (- 2))) (>= v_ULTIMATE.start_main_~i~0_14 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 6#L17true [51] L17-->L17-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_17) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} AuxVars[] AssignedVars[] 3#L17-2true [2020-06-22 01:20:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash 71, now seen corresponding path program 1 times [2020-06-22 01:20:42,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:42,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:42,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:42,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:42,801 INFO L82 PathProgramCache]: Analyzing trace with hash 81333, now seen corresponding path program 1 times [2020-06-22 01:20:42,801 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:42,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:20:42,846 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 01:20:42,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:20:42,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 01:20:42,853 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 01:20:42,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:20:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:20:42,871 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-06-22 01:20:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:20:42,918 INFO L93 Difference]: Finished difference Result 7 states and 11 transitions. [2020-06-22 01:20:42,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:20:42,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 11 transitions. [2020-06-22 01:20:42,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:20:42,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 11 transitions. [2020-06-22 01:20:42,928 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-06-22 01:20:42,928 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-22 01:20:42,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 11 transitions. [2020-06-22 01:20:42,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:20:42,929 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-06-22 01:20:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 11 transitions. [2020-06-22 01:20:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-22 01:20:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 01:20:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2020-06-22 01:20:42,958 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-06-22 01:20:42,958 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-06-22 01:20:42,959 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 01:20:42,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 11 transitions. [2020-06-22 01:20:42,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:20:42,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:20:42,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:20:42,960 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 01:20:42,960 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 01:20:42,960 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRY [40] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 25#L17-2 [2020-06-22 01:20:42,961 INFO L796 eck$LassoCheckResult]: Loop: 25#L17-2 [52] L17-2-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 22#L10 [38] L10-->L12: Formula: (and (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 2)) (< v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 23#L12 [50] L12-->L17-2: Formula: (>= v_ULTIMATE.start_main_~i~0_12 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 25#L17-2 [2020-06-22 01:20:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash 71, now seen corresponding path program 2 times [2020-06-22 01:20:42,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:42,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:42,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:42,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 80991, now seen corresponding path program 1 times [2020-06-22 01:20:42,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:42,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:42,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:20:42,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:42,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2166361, now seen corresponding path program 1 times [2020-06-22 01:20:42,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:42,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:42,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:42,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,018 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:20:43,020 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:20:43,020 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:20:43,020 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:20:43,020 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 01:20:43,021 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 01:20:43,021 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:20:43,021 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:20:43,021 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 01:20:43,021 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:20:43,021 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:20:43,040 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 01:20:43,050 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 01:20:43,054 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 01:20:43,141 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:20:43,142 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 01:20:43,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:20:43,149 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:20:43,181 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:20:43,181 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 01:20:43,187 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:20:43,187 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:20:43,214 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 01:20:43,214 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 01:20:43,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 01:20:43,225 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 01:20:43,255 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 01:20:43,255 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 01:20:43,286 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 01:20:43,288 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 01:20:43,288 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 01:20:43,289 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 01:20:43,289 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 01:20:43,289 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 01:20:43,289 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 01:20:43,289 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 01:20:43,289 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 01:20:43,289 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 01:20:43,289 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 01:20:43,290 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 01:20:43,292 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 01:20:43,297 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 01:20:43,301 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 01:20:43,373 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 01:20:43,378 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 01:20:43,380 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 01:20:43,402 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:20:43,403 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:20:43,403 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:20:43,403 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:20:43,408 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:20:43,408 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:20:43,417 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:20:43,418 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 01:20:43,418 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:20:43,419 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:20:43,419 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:20:43,419 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:20:43,422 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 01:20:43,422 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 01:20:43,431 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 01:20:43,432 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 01:20:43,433 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 01:20:43,433 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 01:20:43,433 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 01:20:43,434 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 01:20:43,434 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 01:20:43,435 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 01:20:43,435 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 01:20:43,442 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 01:20:43,447 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 01:20:43,447 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 01:20:43,449 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 01:20:43,449 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 01:20:43,449 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 01:20:43,450 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-06-22 01:20:43,451 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 01:20:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:20:43,487 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:20:43,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:20:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:20:43,497 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 01:20:43,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:20:43,530 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 01:20:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:20:43,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 01:20:43,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 01:20:43,614 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 6 predicates after loop cannibalization [2020-06-22 01:20:43,617 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 6 loop predicates [2020-06-22 01:20:43,618 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-06-22 01:20:43,708 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 38 transitions. Complement of second has 8 states. [2020-06-22 01:20:43,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-06-22 01:20:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 01:20:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2020-06-22 01:20:43,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 3 letters. [2020-06-22 01:20:43,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:20:43,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 4 letters. Loop has 3 letters. [2020-06-22 01:20:43,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:20:43,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 1 letters. Loop has 6 letters. [2020-06-22 01:20:43,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 01:20:43,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 38 transitions. [2020-06-22 01:20:43,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:20:43,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 14 states and 20 transitions. [2020-06-22 01:20:43,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-06-22 01:20:43,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-06-22 01:20:43,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2020-06-22 01:20:43,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:20:43,723 INFO L706 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-06-22 01:20:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2020-06-22 01:20:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-06-22 01:20:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-06-22 01:20:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-06-22 01:20:43,726 INFO L729 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-06-22 01:20:43,726 INFO L609 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-06-22 01:20:43,726 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 01:20:43,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-06-22 01:20:43,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:20:43,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:20:43,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:20:43,728 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 01:20:43,728 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 01:20:43,728 INFO L794 eck$LassoCheckResult]: Stem: 108#ULTIMATE.startENTRY [40] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 109#L17-2 [53] L17-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 105#L10 [49] L10-->L17: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 (- 2))) (>= v_ULTIMATE.start_main_~i~0_14 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 110#L17 [2020-06-22 01:20:43,728 INFO L796 eck$LassoCheckResult]: Loop: 110#L17 [51] L17-->L17-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_17) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} AuxVars[] AssignedVars[] 111#L17-2 [53] L17-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 114#L10 [49] L10-->L17: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 (- 2))) (>= v_ULTIMATE.start_main_~i~0_14 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 110#L17 [2020-06-22 01:20:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 69923, now seen corresponding path program 1 times [2020-06-22 01:20:43,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:43,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:43,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:43,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,738 INFO L82 PathProgramCache]: Analyzing trace with hash 80494, now seen corresponding path program 1 times [2020-06-22 01:20:43,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:43,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:43,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:43,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 01:20:43,749 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 01:20:43,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 01:20:43,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 01:20:43,750 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 01:20:43,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 01:20:43,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 01:20:43,751 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-06-22 01:20:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 01:20:43,781 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2020-06-22 01:20:43,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 01:20:43,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2020-06-22 01:20:43,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-06-22 01:20:43,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 19 transitions. [2020-06-22 01:20:43,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-06-22 01:20:43,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-06-22 01:20:43,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-06-22 01:20:43,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 01:20:43,786 INFO L706 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-06-22 01:20:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-06-22 01:20:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-06-22 01:20:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-06-22 01:20:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-06-22 01:20:43,788 INFO L729 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-06-22 01:20:43,788 INFO L609 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-06-22 01:20:43,788 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 01:20:43,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-06-22 01:20:43,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 01:20:43,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 01:20:43,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 01:20:43,790 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 01:20:43,790 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-06-22 01:20:43,790 INFO L794 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY [40] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 139#L17-2 [53] L17-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 143#L10 [49] L10-->L17: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 (- 2))) (>= v_ULTIMATE.start_main_~i~0_14 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 140#L17 [2020-06-22 01:20:43,790 INFO L796 eck$LassoCheckResult]: Loop: 140#L17 [51] L17-->L17-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_17) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_17} AuxVars[] AssignedVars[] 135#L17-2 [52] L17-2-->L10: Formula: (> 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 136#L10 [38] L10-->L12: Formula: (and (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 2)) (< v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 137#L12 [50] L12-->L17-2: Formula: (>= v_ULTIMATE.start_main_~i~0_12 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 145#L17-2 [53] L17-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 144#L10 [49] L10-->L17: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 (- 2))) (>= v_ULTIMATE.start_main_~i~0_14 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 140#L17 [2020-06-22 01:20:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash 69923, now seen corresponding path program 2 times [2020-06-22 01:20:43,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:43,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:43,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:43,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1898172022, now seen corresponding path program 1 times [2020-06-22 01:20:43,799 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:43,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:43,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 01:20:43,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 01:20:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash 446718252, now seen corresponding path program 1 times [2020-06-22 01:20:43,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 01:20:43,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 01:20:43,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 01:20:43,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 01:20:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 01:20:43,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 01:20:43 BasicIcfg [2020-06-22 01:20:43,884 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 01:20:43,885 INFO L168 Benchmark]: Toolchain (without parser) took 2002.12 ms. Allocated memory was 649.6 MB in the beginning and 694.2 MB in the end (delta: 44.6 MB). Free memory was 565.2 MB in the beginning and 501.0 MB in the end (delta: 64.2 MB). Peak memory consumption was 108.8 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,887 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 586.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 01:20:43,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.86 ms. Allocated memory was 649.6 MB in the beginning and 694.2 MB in the end (delta: 44.6 MB). Free memory was 565.2 MB in the beginning and 661.7 MB in the end (delta: -96.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.14 ms. Allocated memory is still 694.2 MB. Free memory was 661.7 MB in the beginning and 660.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,889 INFO L168 Benchmark]: Boogie Preprocessor took 18.98 ms. Allocated memory is still 694.2 MB. Free memory was 660.3 MB in the beginning and 657.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,889 INFO L168 Benchmark]: RCFGBuilder took 197.61 ms. Allocated memory is still 694.2 MB. Free memory was 657.2 MB in the beginning and 643.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,890 INFO L168 Benchmark]: BlockEncodingV2 took 76.41 ms. Allocated memory is still 694.2 MB. Free memory was 643.3 MB in the beginning and 637.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,890 INFO L168 Benchmark]: TraceAbstraction took 154.83 ms. Allocated memory is still 694.2 MB. Free memory was 637.9 MB in the beginning and 628.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,891 INFO L168 Benchmark]: BuchiAutomizer took 1235.84 ms. Allocated memory is still 694.2 MB. Free memory was 628.4 MB in the beginning and 501.0 MB in the end (delta: 127.3 MB). Peak memory consumption was 127.3 MB. Max. memory is 50.3 GB. [2020-06-22 01:20:43,895 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 586.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 278.86 ms. Allocated memory was 649.6 MB in the beginning and 694.2 MB in the end (delta: 44.6 MB). Free memory was 565.2 MB in the beginning and 661.7 MB in the end (delta: -96.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.14 ms. Allocated memory is still 694.2 MB. Free memory was 661.7 MB in the beginning and 660.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.98 ms. Allocated memory is still 694.2 MB. Free memory was 660.3 MB in the beginning and 657.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 197.61 ms. Allocated memory is still 694.2 MB. Free memory was 657.2 MB in the beginning and 643.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 76.41 ms. Allocated memory is still 694.2 MB. Free memory was 643.3 MB in the beginning and 637.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.83 ms. Allocated memory is still 694.2 MB. Free memory was 637.9 MB in the beginning and 628.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1235.84 ms. Allocated memory is still 694.2 MB. Free memory was 628.4 MB in the beginning and 501.0 MB in the end (delta: 127.3 MB). Peak memory consumption was 127.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 0 deterministic, 1 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 64 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d661c4e=0, \result=0, i=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L16] i = i-2 Loop: [L17] COND FALSE !(i > 0) [L9] COND TRUE i != 0 [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L16] i = i-2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 01:20:38.602 ----------------------------------------------- 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 01:20:44.135 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check