YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 22:58:55,963 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 22:58:55,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 22:58:55,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 22:58:55,977 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 22:58:55,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 22:58:55,979 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 22:58:55,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 22:58:55,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 22:58:55,982 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 22:58:55,983 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 22:58:55,983 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 22:58:55,984 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 22:58:55,985 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 22:58:55,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 22:58:55,987 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 22:58:55,988 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 22:58:55,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 22:58:55,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 22:58:55,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 22:58:55,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 22:58:55,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 22:58:55,996 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 22:58:55,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 22:58:55,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 22:58:55,998 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 22:58:55,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 22:58:55,999 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 22:58:55,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 22:58:56,000 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 22:58:56,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 22:58:56,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 22:58:56,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 22:58:56,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 22:58:56,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 22:58:56,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 22:58:56,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 22:58:56,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 22:58:56,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 22:58:56,005 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 22:58:56,019 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 22:58:56,020 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 22:58:56,021 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 22:58:56,021 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 22:58:56,021 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 22:58:56,021 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:58:56,021 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 22:58:56,022 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 22:58:56,022 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 22:58:56,022 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 22:58:56,022 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 22:58:56,022 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 22:58:56,022 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 22:58:56,023 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 22:58:56,023 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:58:56,023 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 22:58:56,023 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 22:58:56,023 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 22:58:56,023 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 22:58:56,024 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 22:58:56,024 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 22:58:56,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 22:58:56,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 22:58:56,024 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 22:58:56,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 22:58:56,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 22:58:56,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 22:58:56,025 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 22:58:56,025 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 22:58:56,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 22:58:56,064 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 22:58:56,068 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 22:58:56,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 22:58:56,070 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 22:58:56,071 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:58:56,141 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/3364b7c1ce384f179054bcdbeb8a5907/FLAG3915550b4 [2020-06-21 22:58:56,483 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 22:58:56,484 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:58:56,490 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/3364b7c1ce384f179054bcdbeb8a5907/FLAG3915550b4 [2020-06-21 22:58:56,899 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/3364b7c1ce384f179054bcdbeb8a5907 [2020-06-21 22:58:56,910 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 22:58:56,912 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 22:58:56,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 22:58:56,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 22:58:56,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 22:58:56,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:58:56" (1/1) ... [2020-06-21 22:58:56,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9acc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:56, skipping insertion in model container [2020-06-21 22:58:56,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:58:56" (1/1) ... [2020-06-21 22:58:56,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 22:58:56,946 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 22:58:57,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:58:57,103 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 22:58:57,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:58:57,185 INFO L195 MainTranslator]: Completed translation [2020-06-21 22:58:57,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57 WrapperNode [2020-06-21 22:58:57,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 22:58:57,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 22:58:57,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 22:58:57,187 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 22:58:57,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 22:58:57,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 22:58:57,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 22:58:57,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 22:58:57,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 22:58:57,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 22:58:57,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 22:58:57,240 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 22:58:57,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 22:58:57,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 22:58:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 22:58:57,419 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 22:58:57,420 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 22:58:57,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:58:57 BoogieIcfgContainer [2020-06-21 22:58:57,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 22:58:57,422 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 22:58:57,422 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 22:58:57,424 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 22:58:57,425 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:58:57" (1/1) ... [2020-06-21 22:58:57,439 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-21 22:58:57,440 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 22:58:57,441 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 22:58:57,442 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 22:58:57,442 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:58:57,444 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 22:58:57,445 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 22:58:57,445 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 22:58:57,459 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 22:58:57,472 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-21 22:58:57,477 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 22:58:57,478 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:58:57,487 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 22:58:57,489 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-21 22:58:57,491 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:58:57,491 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:58:57,495 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-21 22:58:57,495 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:58:57,496 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:58:57,496 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:58:57,496 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 22:58:57,496 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:58:57,497 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 3 edges [2020-06-21 22:58:57,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:58:57 BasicIcfg [2020-06-21 22:58:57,497 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 22:58:57,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 22:58:57,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 22:58:57,501 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 22:58:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:58:56" (1/4) ... [2020-06-21 22:58:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e65606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (2/4) ... [2020-06-21 22:58:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e65606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:58:57" (3/4) ... [2020-06-21 22:58:57,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e65606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:58:57" (4/4) ... [2020-06-21 22:58:57,505 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:58:57,515 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 22:58:57,523 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 22:58:57,540 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 22:58:57,570 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:58:57,571 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 22:58:57,571 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 22:58:57,571 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:58:57,571 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:58:57,571 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:58:57,572 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 22:58:57,572 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:58:57,572 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 22:58:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-21 22:58:57,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 22:58:57,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-21 22:58:57,644 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 22:58:57,645 INFO L451 ceAbstractionStarter]: At program point L20-2(lines 20 22) the Hoare annotation is: true [2020-06-21 22:58:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:58:57 BasicIcfg [2020-06-21 22:58:57,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 22:58:57,653 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 22:58:57,653 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 22:58:57,656 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 22:58:57,657 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:58:57,657 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 10:58:56" (1/5) ... [2020-06-21 22:58:57,658 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@717e682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,658 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:58:57,658 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:58:57" (2/5) ... [2020-06-21 22:58:57,659 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@717e682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,659 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:58:57,659 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:58:57" (3/5) ... [2020-06-21 22:58:57,660 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@717e682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,660 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:58:57,660 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:58:57" (4/5) ... [2020-06-21 22:58:57,660 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@717e682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:58:57, skipping insertion in model container [2020-06-21 22:58:57,660 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:58:57,660 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:58:57" (5/5) ... [2020-06-21 22:58:57,662 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:58:57,689 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:58:57,689 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 22:58:57,690 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 22:58:57,690 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:58:57,690 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:58:57,690 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:58:57,690 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 22:58:57,691 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:58:57,691 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 22:58:57,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:58:57,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:57,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:58:57,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:58:57,716 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:58:57,716 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:58:57,716 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 22:58:57,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-21 22:58:57,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:57,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:58:57,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:58:57,717 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:58:57,717 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:58:57,722 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [38] ULTIMATE.startENTRY-->L20-2: Formula: (< 0 v_ULTIMATE.start_main_~x~0_10) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 4#L20-2true [2020-06-21 22:58:57,723 INFO L796 eck$LassoCheckResult]: Loop: 4#L20-2true [34] L20-2-->L20-2: Formula: (and (> 0 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 (- 1)))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 4#L20-2true [2020-06-21 22:58:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-06-21 22:58:57,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:57,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:57,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:57,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-06-21 22:58:57,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:57,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:57,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2173, now seen corresponding path program 1 times [2020-06-21 22:58:57,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:57,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:57,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:57,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:58:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:58:57,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 22:58:57,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-06-21 22:58:57,882 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:58:57,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:58:57,883 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:58:57,883 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:58:57,884 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:58:57,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:58:57,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:58:57,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:58:57,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 22:58:57,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:58:57,885 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:58:57,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:58:57,948 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:58:57,949 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:57,957 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:58:57,958 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:57,990 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:58:57,990 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:58:58,012 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:58:58,012 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] [2020-06-21 22:58:58,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-21 22:58:58,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-21 22:58:58,054 INFO L87 Difference]: Start difference. First operand 2 states. Second operand 3 states. [2020-06-21 22:58:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 22:58:58,072 INFO L93 Difference]: Finished difference Result 3 states and 4 transitions. [2020-06-21 22:58:58,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-21 22:58:58,076 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 4 transitions. [2020-06-21 22:58:58,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:58,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 3 states and 4 transitions. [2020-06-21 22:58:58,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-21 22:58:58,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-06-21 22:58:58,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 4 transitions. [2020-06-21 22:58:58,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 22:58:58,082 INFO L706 BuchiCegarLoop]: Abstraction has 3 states and 4 transitions. [2020-06-21 22:58:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 4 transitions. [2020-06-21 22:58:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2020-06-21 22:58:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 22:58:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-06-21 22:58:58,110 INFO L729 BuchiCegarLoop]: Abstraction has 3 states and 4 transitions. [2020-06-21 22:58:58,110 INFO L609 BuchiCegarLoop]: Abstraction has 3 states and 4 transitions. [2020-06-21 22:58:58,110 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 22:58:58,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 4 transitions. [2020-06-21 22:58:58,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:58,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:58:58,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:58:58,111 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 22:58:58,112 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:58:58,112 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L20-2: Formula: (< 0 v_ULTIMATE.start_main_~x~0_10) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 17#L20-2 [35] L20-2-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 (- 1))) (< 0 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 18#L20-2 [2020-06-21 22:58:58,112 INFO L796 eck$LassoCheckResult]: Loop: 18#L20-2 [34] L20-2-->L20-2: Formula: (and (> 0 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 (- 1)))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 18#L20-2 [2020-06-21 22:58:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2174, now seen corresponding path program 1 times [2020-06-21 22:58:58,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:58,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 2 times [2020-06-21 22:58:58,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:58,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash 67428, now seen corresponding path program 1 times [2020-06-21 22:58:58,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 22:58:58,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:58:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:58:58,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-21 22:58:58,145 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-21 22:58:58,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:58:58,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-21 22:58:58,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:58:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:58:58,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-21 22:58:58,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-06-21 22:58:58,228 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:58:58,228 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:58:58,228 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:58:58,228 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:58:58,228 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:58:58,229 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:58:58,229 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:58:58,229 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:58:58,229 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 22:58:58,229 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:58:58,229 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:58:58,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:58:58,275 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:58:58,275 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:58,281 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:58:58,281 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:58,314 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:58:58,314 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:58:58,334 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:58:58,335 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 12, 0] Nus: [0, 0] [2020-06-21 22:58:58,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-21 22:58:58,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-21 22:58:58,362 INFO L87 Difference]: Start difference. First operand 3 states and 4 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-06-21 22:58:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 22:58:58,391 INFO L93 Difference]: Finished difference Result 3 states and 3 transitions. [2020-06-21 22:58:58,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-21 22:58:58,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2020-06-21 22:58:58,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:58,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 3 states and 3 transitions. [2020-06-21 22:58:58,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-21 22:58:58,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-06-21 22:58:58,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2020-06-21 22:58:58,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 22:58:58,394 INFO L706 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2020-06-21 22:58:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2020-06-21 22:58:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 2. [2020-06-21 22:58:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-21 22:58:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-06-21 22:58:58,396 INFO L729 BuchiCegarLoop]: Abstraction has 2 states and 2 transitions. [2020-06-21 22:58:58,396 INFO L609 BuchiCegarLoop]: Abstraction has 2 states and 2 transitions. [2020-06-21 22:58:58,396 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 22:58:58,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states and 2 transitions. [2020-06-21 22:58:58,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 22:58:58,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:58:58,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:58:58,397 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:58:58,397 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 22:58:58,397 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L20-2: Formula: (< 0 v_ULTIMATE.start_main_~x~0_10) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 38#L20-2 [2020-06-21 22:58:58,397 INFO L796 eck$LassoCheckResult]: Loop: 38#L20-2 [35] L20-2-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 (- 1))) (< 0 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 38#L20-2 [2020-06-21 22:58:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,398 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2020-06-21 22:58:58,398 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:58,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,403 INFO L82 PathProgramCache]: Analyzing trace with hash 66, now seen corresponding path program 1 times [2020-06-21 22:58:58,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 22:58:58,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2174, now seen corresponding path program 2 times [2020-06-21 22:58:58,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:58:58,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:58:58,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:58:58,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:58:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:58:58,447 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:58:58,448 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:58:58,464 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:58:58,465 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:58:58,465 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:58:58,465 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:58:58,465 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:58:58,465 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:58:58,465 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 22:58:58,465 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:58:58,465 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:58:58,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:58:58,504 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:58:58,505 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:58,511 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:58:58,511 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-06-21 22:58:58,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:58:58,542 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:58:58,572 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 22:58:58,574 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:58:58,574 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:58:58,574 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:58:58,574 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:58:58,575 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 22:58:58,575 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 22:58:58,575 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:58:58,575 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:58:58,575 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 22:58:58,575 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:58:58,575 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:58:58,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:58:58,618 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:58:58,624 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 22:58:58,626 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 [2020-06-21 22:58:58,627 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 22:58:58,627 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 22:58:58,628 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 22:58:58,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 22:58:58,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 22:58:58,630 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 22:58:58,630 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 22:58:58,637 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 22:58:58,640 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 22:58:58,640 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 22:58:58,642 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 22:58:58,643 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 22:58:58,643 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 22:58:58,644 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-21 22:58:58,645 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 22:58:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:58:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:58:58,667 WARN L254 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 22:58:58,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:58:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:58:58,671 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 22:58:58,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:58:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:58:58,673 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-21 22:58:58,676 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 [2020-06-21 22:58:58,677 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states and 2 transitions. cyclomatic complexity: 1 Second operand 2 states. [2020-06-21 22:58:58,689 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states and 2 transitions. cyclomatic complexity: 1. Second operand 2 states. Result 3 states and 3 transitions. Complement of second has 2 states. [2020-06-21 22:58:58,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-06-21 22:58:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-21 22:58:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2020-06-21 22:58:58,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 1 letters. [2020-06-21 22:58:58,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:58:58,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 2 letters. Loop has 1 letters. [2020-06-21 22:58:58,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:58:58,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 22:58:58,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:58:58,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2020-06-21 22:58:58,696 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 22:58:58,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2020-06-21 22:58:58,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 22:58:58,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 22:58:58,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 22:58:58,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 22:58:58,697 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 22:58:58,697 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 22:58:58,697 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 22:58:58,698 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 22:58:58,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 22:58:58,698 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 22:58:58,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 22:58:58,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:58:58 BasicIcfg [2020-06-21 22:58:58,704 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 22:58:58,704 INFO L168 Benchmark]: Toolchain (without parser) took 1793.22 ms. Allocated memory was 649.6 MB in the beginning and 681.6 MB in the end (delta: 32.0 MB). Free memory was 564.2 MB in the beginning and 521.0 MB in the end (delta: 43.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,706 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:58:58,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.34 ms. Allocated memory was 649.6 MB in the beginning and 681.6 MB in the end (delta: 32.0 MB). Free memory was 564.2 MB in the beginning and 646.4 MB in the end (delta: -82.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 681.6 MB. Free memory was 646.4 MB in the beginning and 645.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,708 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 681.6 MB. Free memory was 645.1 MB in the beginning and 643.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,708 INFO L168 Benchmark]: RCFGBuilder took 181.76 ms. Allocated memory is still 681.6 MB. Free memory was 643.8 MB in the beginning and 630.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,709 INFO L168 Benchmark]: BlockEncodingV2 took 75.76 ms. Allocated memory is still 681.6 MB. Free memory was 630.8 MB in the beginning and 625.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,710 INFO L168 Benchmark]: TraceAbstraction took 154.04 ms. Allocated memory is still 681.6 MB. Free memory was 625.4 MB in the beginning and 616.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,710 INFO L168 Benchmark]: BuchiAutomizer took 1050.92 ms. Allocated memory is still 681.6 MB. Free memory was 614.9 MB in the beginning and 521.0 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 50.3 GB. [2020-06-21 22:58:58,714 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 2 locations, 3 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 273.34 ms. Allocated memory was 649.6 MB in the beginning and 681.6 MB in the end (delta: 32.0 MB). Free memory was 564.2 MB in the beginning and 646.4 MB in the end (delta: -82.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.46 ms. Allocated memory is still 681.6 MB. Free memory was 646.4 MB in the beginning and 645.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 681.6 MB. Free memory was 645.1 MB in the beginning and 643.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 181.76 ms. Allocated memory is still 681.6 MB. Free memory was 643.8 MB in the beginning and 630.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.76 ms. Allocated memory is still 681.6 MB. Free memory was 630.8 MB in the beginning and 625.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.04 ms. Allocated memory is still 681.6 MB. Free memory was 625.4 MB in the beginning and 616.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1050.92 ms. Allocated memory is still 681.6 MB. Free memory was 614.9 MB in the beginning and 521.0 MB in the end (delta: 93.9 MB). Peak memory consumption was 93.9 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: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function x and consists of 2 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 3 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-21 22:58:53.654 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 22:58:58.945 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check