NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 03:12:10,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 03:12:10,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 03:12:10,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 03:12:10,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 03:12:10,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 03:12:10,837 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 03:12:10,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 03:12:10,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 03:12:10,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 03:12:10,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 03:12:10,842 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 03:12:10,843 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 03:12:10,843 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 03:12:10,844 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 03:12:10,845 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 03:12:10,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 03:12:10,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 03:12:10,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 03:12:10,851 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 03:12:10,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 03:12:10,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 03:12:10,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 03:12:10,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 03:12:10,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 03:12:10,856 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 03:12:10,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 03:12:10,857 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 03:12:10,857 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 03:12:10,858 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 03:12:10,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 03:12:10,859 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 03:12:10,860 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 03:12:10,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 03:12:10,861 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 03:12:10,861 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 03:12:10,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 03:12:10,862 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 03:12:10,864 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 03:12:10,864 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 03:12:10,879 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 03:12:10,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 03:12:10,880 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 03:12:10,880 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 03:12:10,880 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 03:12:10,880 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 03:12:10,881 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 03:12:10,881 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 03:12:10,881 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 03:12:10,881 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 03:12:10,882 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 03:12:10,882 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 03:12:10,882 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 03:12:10,883 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 03:12:10,883 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 03:12:10,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 03:12:10,883 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 03:12:10,883 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 03:12:10,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 03:12:10,884 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 03:12:10,884 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 03:12:10,884 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 03:12:10,884 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 03:12:10,884 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 03:12:10,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 03:12:10,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 03:12:10,885 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 03:12:10,885 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 03:12:10,885 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 03:12:10,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 03:12:10,923 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 03:12:10,927 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 03:12:10,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 03:12:10,929 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 03:12:10,929 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 03:12:10,996 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/25a825cd86df4732af5e83eb4260da2b/FLAG91868993d [2020-06-22 03:12:11,324 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 03:12:11,325 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 03:12:11,331 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/25a825cd86df4732af5e83eb4260da2b/FLAG91868993d [2020-06-22 03:12:11,727 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/25a825cd86df4732af5e83eb4260da2b [2020-06-22 03:12:11,739 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 03:12:11,741 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 03:12:11,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 03:12:11,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 03:12:11,745 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 03:12:11,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 03:12:11" (1/1) ... [2020-06-22 03:12:11,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6735136f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:11, skipping insertion in model container [2020-06-22 03:12:11,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 03:12:11" (1/1) ... [2020-06-22 03:12:11,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 03:12:11,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 03:12:11,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 03:12:11,933 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 03:12:11,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 03:12:12,017 INFO L195 MainTranslator]: Completed translation [2020-06-22 03:12:12,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12 WrapperNode [2020-06-22 03:12:12,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 03:12:12,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 03:12:12,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 03:12:12,019 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 03:12:12,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 03:12:12,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 03:12:12,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 03:12:12,053 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 03:12:12,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 03:12:12,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 03:12:12,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 03:12:12,072 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 03:12:12,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (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 [2020-06-22 03:12:12,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 03:12:12,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 03:12:12,273 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 03:12:12,274 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 03:12:12,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:12:12 BoogieIcfgContainer [2020-06-22 03:12:12,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 03:12:12,275 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 03:12:12,276 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 03:12:12,278 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 03:12:12,278 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:12:12" (1/1) ... [2020-06-22 03:12:12,292 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-06-22 03:12:12,294 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 03:12:12,295 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 03:12:12,296 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 03:12:12,296 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 03:12:12,298 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 03:12:12,299 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 03:12:12,299 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 03:12:12,315 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 03:12:12,332 INFO L200 BlockEncoder]: SBE split 3 edges [2020-06-22 03:12:12,336 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 03:12:12,338 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 03:12:12,349 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 03:12:12,350 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-06-22 03:12:12,352 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 03:12:12,352 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 03:12:12,352 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 03:12:12,352 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 03:12:12,353 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 9 edges [2020-06-22 03:12:12,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 03:12:12 BasicIcfg [2020-06-22 03:12:12,353 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 03:12:12,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 03:12:12,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 03:12:12,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 03:12:12,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 03:12:11" (1/4) ... [2020-06-22 03:12:12,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dd313d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (2/4) ... [2020-06-22 03:12:12,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dd313d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:12:12" (3/4) ... [2020-06-22 03:12:12,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dd313d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 03:12:12" (4/4) ... [2020-06-22 03:12:12,361 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 03:12:12,371 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 03:12:12,378 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 03:12:12,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 03:12:12,422 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 03:12:12,423 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 03:12:12,423 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 03:12:12,423 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 03:12:12,423 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 03:12:12,423 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 03:12:12,424 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 03:12:12,424 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 03:12:12,424 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 03:12:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-06-22 03:12:12,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 03:12:12,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-06-22 03:12:12,496 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 24) no Hoare annotation was computed. [2020-06-22 03:12:12,496 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 03:12:12,496 INFO L451 ceAbstractionStarter]: At program point L13-2(lines 13 28) the Hoare annotation is: true [2020-06-22 03:12:12,496 INFO L451 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: true [2020-06-22 03:12:12,497 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 17 24) no Hoare annotation was computed. [2020-06-22 03:12:12,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:12:12 BasicIcfg [2020-06-22 03:12:12,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 03:12:12,505 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 03:12:12,505 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 03:12:12,509 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 03:12:12,509 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 03:12:12,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 03:12:11" (1/5) ... [2020-06-22 03:12:12,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795cc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,510 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 03:12:12,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 03:12:12" (2/5) ... [2020-06-22 03:12:12,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795cc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,511 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 03:12:12,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:12:12" (3/5) ... [2020-06-22 03:12:12,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795cc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,512 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 03:12:12,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 03:12:12" (4/5) ... [2020-06-22 03:12:12,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795cc7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 03:12:12, skipping insertion in model container [2020-06-22 03:12:12,513 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 03:12:12,513 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:12:12" (5/5) ... [2020-06-22 03:12:12,514 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 03:12:12,540 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 03:12:12,540 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 03:12:12,541 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 03:12:12,541 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 03:12:12,541 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 03:12:12,541 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 03:12:12,541 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 03:12:12,541 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 03:12:12,541 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 03:12:12,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 03:12:12,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 03:12:12,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 03:12:12,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 03:12:12,567 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 03:12:12,567 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 03:12:12,568 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 03:12:12,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 03:12:12,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 03:12:12,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 03:12:12,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 03:12:12,569 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 03:12:12,569 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 03:12:12,574 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~xtmp~0] 4#L13-2true [2020-06-22 03:12:12,575 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true [56] L13-2-->L17: Formula: (and (= v_ULTIMATE.start_main_~tmp~0_4 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~xtmp~0_4 v_ULTIMATE.start_main_~x~0_7) (> 0 v_ULTIMATE.start_main_~y~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= 0 v_ULTIMATE.start_main_~x~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~xtmp~0] 5#L17true [41] L17-->L21-3: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 0) (= v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 6#L21-3true [43] L21-3-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~tmp~0_5) (= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~xtmp~0_8)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L13-2true [2020-06-22 03:12:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 03:12:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-06-22 03:12:12,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 03:12:12,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 03:12:12,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 03:12:12,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 03:12:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash 84921, now seen corresponding path program 1 times [2020-06-22 03:12:12,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 03:12:12,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 03:12:12,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 03:12:12,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 03:12:12,678 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 03:12:12,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 03:12:12,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-06-22 03:12:12,685 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 03:12:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-06-22 03:12:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-06-22 03:12:12,701 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 2 states. [2020-06-22 03:12:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 03:12:12,716 INFO L93 Difference]: Finished difference Result 5 states and 8 transitions. [2020-06-22 03:12:12,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-06-22 03:12:12,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 8 transitions. [2020-06-22 03:12:12,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 03:12:12,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 5 states and 8 transitions. [2020-06-22 03:12:12,726 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 03:12:12,726 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 03:12:12,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 8 transitions. [2020-06-22 03:12:12,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 03:12:12,727 INFO L706 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 03:12:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 8 transitions. [2020-06-22 03:12:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-06-22 03:12:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 03:12:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-22 03:12:12,757 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 03:12:12,757 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 03:12:12,757 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 03:12:12,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-06-22 03:12:12,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 03:12:12,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 03:12:12,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 03:12:12,758 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 03:12:12,758 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 03:12:12,758 INFO L794 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~xtmp~0] 19#L13-2 [2020-06-22 03:12:12,759 INFO L796 eck$LassoCheckResult]: Loop: 19#L13-2 [57] L13-2-->L17: Formula: (and (= v_ULTIMATE.start_main_~tmp~0_4 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~xtmp~0_4 v_ULTIMATE.start_main_~x~0_7) (< 0 v_ULTIMATE.start_main_~y~0_7) (<= 0 v_ULTIMATE.start_main_~y~0_7) (<= 0 v_ULTIMATE.start_main_~x~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~xtmp~0] 20#L17 [41] L17-->L21-3: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 0) (= v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 21#L21-3 [43] L21-3-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~tmp~0_5) (= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~xtmp~0_8)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 19#L13-2 [2020-06-22 03:12:12,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 03:12:12,759 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2020-06-22 03:12:12,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 03:12:12,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 03:12:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 03:12:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 03:12:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 85882, now seen corresponding path program 1 times [2020-06-22 03:12:12,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 03:12:12,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 03:12:12,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 03:12:12,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 03:12:12,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2081879, now seen corresponding path program 1 times [2020-06-22 03:12:12,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 03:12:12,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 03:12:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 03:12:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 03:12:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 03:12:12,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 03:12:12 BasicIcfg [2020-06-22 03:12:12,921 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 03:12:12,922 INFO L168 Benchmark]: Toolchain (without parser) took 1182.05 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 565.0 MB in the beginning and 579.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,923 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 03:12:12,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.54 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 565.0 MB in the beginning and 648.7 MB in the end (delta: -83.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 681.1 MB. Free memory was 648.7 MB in the beginning and 645.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,925 INFO L168 Benchmark]: Boogie Preprocessor took 19.26 ms. Allocated memory is still 681.1 MB. Free memory was 645.9 MB in the beginning and 643.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,926 INFO L168 Benchmark]: RCFGBuilder took 203.16 ms. Allocated memory is still 681.1 MB. Free memory was 643.7 MB in the beginning and 631.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,927 INFO L168 Benchmark]: BlockEncodingV2 took 77.97 ms. Allocated memory is still 681.1 MB. Free memory was 631.0 MB in the beginning and 625.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,927 INFO L168 Benchmark]: TraceAbstraction took 150.45 ms. Allocated memory is still 681.1 MB. Free memory was 624.5 MB in the beginning and 615.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,928 INFO L168 Benchmark]: BuchiAutomizer took 415.89 ms. Allocated memory is still 681.1 MB. Free memory was 615.7 MB in the beginning and 579.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 50.3 GB. [2020-06-22 03:12:12,932 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 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 276.54 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 565.0 MB in the beginning and 648.7 MB in the end (delta: -83.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 681.1 MB. Free memory was 648.7 MB in the beginning and 645.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.26 ms. Allocated memory is still 681.1 MB. Free memory was 645.9 MB in the beginning and 643.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 203.16 ms. Allocated memory is still 681.1 MB. Free memory was 643.7 MB in the beginning and 631.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 77.97 ms. Allocated memory is still 681.1 MB. Free memory was 631.0 MB in the beginning and 625.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.45 ms. Allocated memory is still 681.1 MB. Free memory was 624.5 MB in the beginning and 615.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 415.89 ms. Allocated memory is still 681.1 MB. Free memory was 615.7 MB in the beginning and 579.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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 {xtmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31476605=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@276ac2ac=0, x=1, y=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 03:12:08.552 ----------------------------------------------- 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 2020-06-22 03:12:13.167 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check