NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 05:26:12,171 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 05:26:12,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 05:26:12,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 05:26:12,185 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 05:26:12,186 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 05:26:12,187 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 05:26:12,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 05:26:12,190 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 05:26:12,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 05:26:12,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 05:26:12,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 05:26:12,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 05:26:12,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 05:26:12,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 05:26:12,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 05:26:12,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 05:26:12,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 05:26:12,200 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 05:26:12,201 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 05:26:12,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 05:26:12,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 05:26:12,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 05:26:12,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 05:26:12,206 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 05:26:12,207 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 05:26:12,207 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 05:26:12,208 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 05:26:12,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 05:26:12,209 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 05:26:12,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 05:26:12,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 05:26:12,211 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 05:26:12,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 05:26:12,212 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 05:26:12,212 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 05:26:12,212 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 05:26:12,213 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 05:26:12,214 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 05:26:12,214 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 05:26:12,228 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 05:26:12,229 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 05:26:12,230 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 05:26:12,230 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 05:26:12,230 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 05:26:12,231 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:26:12,231 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 05:26:12,231 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 05:26:12,231 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 05:26:12,231 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 05:26:12,231 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 05:26:12,232 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 05:26:12,232 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 05:26:12,232 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 05:26:12,232 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:26:12,232 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 05:26:12,233 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 05:26:12,233 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 05:26:12,233 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 05:26:12,233 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 05:26:12,233 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 05:26:12,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 05:26:12,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 05:26:12,234 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 05:26:12,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 05:26:12,234 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 05:26:12,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 05:26:12,235 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 05:26:12,235 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 05:26:12,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 05:26:12,274 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 05:26:12,278 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 05:26:12,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 05:26:12,279 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 05:26:12,280 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 05:26:12,347 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/473fe843ed33409caf061cc9e0b17a7f/FLAGb0fc65f08 [2020-06-22 05:26:12,688 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 05:26:12,688 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 05:26:12,695 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/473fe843ed33409caf061cc9e0b17a7f/FLAGb0fc65f08 [2020-06-22 05:26:13,106 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/473fe843ed33409caf061cc9e0b17a7f [2020-06-22 05:26:13,117 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 05:26:13,119 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 05:26:13,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 05:26:13,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 05:26:13,124 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 05:26:13,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5887e759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 05:26:13,153 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 05:26:13,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:26:13,312 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 05:26:13,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:26:13,418 INFO L195 MainTranslator]: Completed translation [2020-06-22 05:26:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13 WrapperNode [2020-06-22 05:26:13,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 05:26:13,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 05:26:13,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 05:26:13,420 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 05:26:13,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 05:26:13,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 05:26:13,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 05:26:13,454 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 05:26:13,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 05:26:13,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 05:26:13,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 05:26:13,470 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 05:26:13,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 05:26:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-06-22 05:26:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-06-22 05:26:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-06-22 05:26:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-06-22 05:26:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 05:26:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 05:26:13,693 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 05:26:13,693 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2020-06-22 05:26:13,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:26:13 BoogieIcfgContainer [2020-06-22 05:26:13,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 05:26:13,695 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 05:26:13,695 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 05:26:13,698 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 05:26:13,698 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:26:13" (1/1) ... [2020-06-22 05:26:13,715 INFO L313 BlockEncoder]: Initial Icfg 21 locations, 26 edges [2020-06-22 05:26:13,717 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 05:26:13,718 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 05:26:13,719 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 05:26:13,719 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:26:13,721 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 05:26:13,722 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 05:26:13,722 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 05:26:13,737 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 05:26:13,744 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-22 05:26:13,749 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:26:13,752 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:26:13,762 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 05:26:13,764 INFO L70 RemoveSinkStates]: Removed 2 edges and 2 locations by removing sink states [2020-06-22 05:26:13,766 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:26:13,766 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:26:13,766 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 05:26:13,767 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 05:26:13,767 INFO L313 BlockEncoder]: Encoded RCFG 17 locations, 22 edges [2020-06-22 05:26:13,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:26:13 BasicIcfg [2020-06-22 05:26:13,768 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 05:26:13,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 05:26:13,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 05:26:13,772 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 05:26:13,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 05:26:13" (1/4) ... [2020-06-22 05:26:13,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725574a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (2/4) ... [2020-06-22 05:26:13,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725574a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:26:13" (3/4) ... [2020-06-22 05:26:13,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@725574a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:26:13" (4/4) ... [2020-06-22 05:26:13,776 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:26:13,786 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 05:26:13,793 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 05:26:13,810 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 05:26:13,842 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:26:13,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 05:26:13,843 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 05:26:13,843 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:26:13,843 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:26:13,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:26:13,843 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 05:26:13,843 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:26:13,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 05:26:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-06-22 05:26:13,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 05:26:13,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-06-22 05:26:13,942 INFO L451 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: true [2020-06-22 05:26:13,942 INFO L451 ceAbstractionStarter]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-06-22 05:26:13,943 INFO L448 ceAbstractionStarter]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-06-22 05:26:13,943 INFO L451 ceAbstractionStarter]: At program point L14-1(line 14) the Hoare annotation is: true [2020-06-22 05:26:13,943 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-06-22 05:26:13,943 INFO L451 ceAbstractionStarter]: At program point L14-2(line 14) the Hoare annotation is: true [2020-06-22 05:26:13,943 INFO L448 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-06-22 05:26:13,944 INFO L448 ceAbstractionStarter]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-06-22 05:26:13,944 INFO L451 ceAbstractionStarter]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-06-22 05:26:13,944 INFO L448 ceAbstractionStarter]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-06-22 05:26:13,944 INFO L448 ceAbstractionStarter]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-06-22 05:26:13,944 INFO L451 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: true [2020-06-22 05:26:13,944 INFO L451 ceAbstractionStarter]: At program point L20-1(line 20) the Hoare annotation is: true [2020-06-22 05:26:13,945 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-06-22 05:26:13,945 INFO L448 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-06-22 05:26:13,945 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 05:26:13,945 INFO L451 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: true [2020-06-22 05:26:13,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:13 BasicIcfg [2020-06-22 05:26:13,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 05:26:13,949 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 05:26:13,950 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 05:26:13,953 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 05:26:13,954 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:26:13,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 05:26:13" (1/5) ... [2020-06-22 05:26:13,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:26:13,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:26:13" (2/5) ... [2020-06-22 05:26:13,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:26:13,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:26:13" (3/5) ... [2020-06-22 05:26:13,956 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,956 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:26:13,956 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:26:13" (4/5) ... [2020-06-22 05:26:13,956 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@545cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:26:13, skipping insertion in model container [2020-06-22 05:26:13,957 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:26:13,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:13" (5/5) ... [2020-06-22 05:26:13,958 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:26:13,985 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:26:13,986 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 05:26:13,986 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 05:26:13,986 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:26:13,986 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:26:13,986 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:26:13,986 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 05:26:13,986 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:26:13,987 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 05:26:13,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-06-22 05:26:14,014 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:26:14,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:26:14,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:26:14,022 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 05:26:14,022 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:26:14,022 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 05:26:14,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-06-22 05:26:14,025 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:26:14,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:26:14,025 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:26:14,026 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 05:26:14,026 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:26:14,031 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue [47] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet5_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret6=|v_ULTIMATE.start_main_#t~ret6_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet5_4|] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret6] 18#L25true [56] L25-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_2| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_2|} AuxVars[] AssignedVars[rec2_#in~j]< 3#rec2ENTRYtrue [2020-06-22 05:26:14,034 INFO L796 eck$LassoCheckResult]: Loop: 3#rec2ENTRYtrue [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 16#L18true [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 15#L20true [50] L20-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_4| (+ v_rec2_~j_5 1)) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i]< 4#rec1ENTRYtrue [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 9#L12true [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 5#rec1FINALtrue [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 12#rec1EXITtrue >[62] rec1EXIT-->L20-1: AOR: Formula: (= |v_rec2_#t~ret3_4| |v_rec1_#resOutParam_4|) InVars {rec1_#res=|v_rec1_#resOutParam_4|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_4|} AuxVars[] AssignedVars[rec2_#t~ret3] LVA: Formula: (= |v_rec1_#in~iInParam_4| (+ v_rec2_~j_5 1)) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i] 19#L20-1true [57] L20-1-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 3#rec2ENTRYtrue [2020-06-22 05:26:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:26:14,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2474, now seen corresponding path program 1 times [2020-06-22 05:26:14,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:26:14,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:26:14,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:26:14,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:26:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1865651641, now seen corresponding path program 1 times [2020-06-22 05:26:14,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:26:14,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:26:14,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:26:14,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:26:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:26:14,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:26:14,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-06-22 05:26:14,189 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 05:26:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 05:26:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-22 05:26:14,205 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-06-22 05:26:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:26:14,290 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-06-22 05:26:14,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-06-22 05:26:14,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2020-06-22 05:26:14,297 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:26:14,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 16 states and 22 transitions. [2020-06-22 05:26:14,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-06-22 05:26:14,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-06-22 05:26:14,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2020-06-22 05:26:14,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 05:26:14,308 INFO L706 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-06-22 05:26:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2020-06-22 05:26:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-06-22 05:26:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-06-22 05:26:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-06-22 05:26:14,341 INFO L729 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-06-22 05:26:14,341 INFO L609 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-06-22 05:26:14,341 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 05:26:14,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-06-22 05:26:14,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:26:14,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:26:14,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:26:14,344 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 05:26:14,344 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:26:14,344 INFO L794 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRY [47] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet5_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret6=|v_ULTIMATE.start_main_#t~ret6_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet5_4|] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret6] 52#L25 [56] L25-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_2| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_2|} AuxVars[] AssignedVars[rec2_#in~j]< 51#rec2ENTRY [2020-06-22 05:26:14,345 INFO L796 eck$LassoCheckResult]: Loop: 51#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 54#L18 [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 56#L20 [50] L20-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_4| (+ v_rec2_~j_5 1)) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i]< 55#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 60#L12 [65] L12-->L14: Formula: (> v_rec1_~i_3 0) InVars {rec1_~i=v_rec1_~i_3} OutVars{rec1_~i=v_rec1_~i_3} AuxVars[] AssignedVars[] 57#L14 [48] L14-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i]< 55#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 60#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 61#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 62#rec1EXIT >[59] rec1EXIT-->L14-1: AOR: Formula: (= |v_rec1_#t~ret0_4| |v_rec1_#resOutParam_1|) InVars {rec1_#res=|v_rec1_#resOutParam_1|} OutVars{rec1_#t~ret0=|v_rec1_#t~ret0_4|} AuxVars[] AssignedVars[rec1_#t~ret0] LVA: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i] 58#L14-1 [42] L14-1-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_2| (+ |v_rec1_#t~ret0_5| (- 1))) InVars {rec1_#t~ret0=|v_rec1_#t~ret0_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_2|} AuxVars[] AssignedVars[rec1_#in~i]< 55#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 60#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 61#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 62#rec1EXIT >[58] rec1EXIT-->L14-2: AOR: Formula: (= |v_rec1_#t~ret1_4| |v_rec1_#resOutParam_2|) InVars {rec1_#res=|v_rec1_#resOutParam_2|} OutVars{rec1_#t~ret1=|v_rec1_#t~ret1_4|} AuxVars[] AssignedVars[rec1_#t~ret1] LVA: Formula: (= |v_rec1_#in~iInParam_2| (+ |v_rec1_#t~ret0_5| (- 1))) InVars {rec1_#t~ret0=|v_rec1_#t~ret0_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_2|} AuxVars[] AssignedVars[rec1_#in~i] 59#L14-2 [46] L14-2-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_3| |v_rec1_#t~ret1_5|) InVars {rec1_#t~ret1=|v_rec1_#t~ret1_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_3|} AuxVars[] AssignedVars[rec1_#in~i]< 55#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 60#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 61#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 62#rec1EXIT >[63] rec1EXIT-->L14-3: AOR: Formula: (= |v_rec1_#t~ret2_4| |v_rec1_#resOutParam_3|) InVars {rec1_#res=|v_rec1_#resOutParam_3|} OutVars{rec1_#t~ret2=|v_rec1_#t~ret2_4|} AuxVars[] AssignedVars[rec1_#t~ret2] LVA: Formula: (= |v_rec1_#in~iInParam_3| |v_rec1_#t~ret1_5|) InVars {rec1_#t~ret1=|v_rec1_#t~ret1_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_3|} AuxVars[] AssignedVars[rec1_#in~i] 63#L14-3 [43] L14-3-->rec1FINAL: Formula: (= |v_rec1_#res_2| (+ |v_rec1_#t~ret2_3| 1)) InVars {rec1_#t~ret2=|v_rec1_#t~ret2_3|} OutVars{rec1_#t~ret1=|v_rec1_#t~ret1_3|, rec1_#t~ret2=|v_rec1_#t~ret2_2|, rec1_#res=|v_rec1_#res_2|, rec1_#t~ret0=|v_rec1_#t~ret0_3|} AuxVars[] AssignedVars[rec1_#t~ret1, rec1_#t~ret2, rec1_#res, rec1_#t~ret0] 64#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 66#rec1EXIT >[62] rec1EXIT-->L20-1: AOR: Formula: (= |v_rec2_#t~ret3_4| |v_rec1_#resOutParam_4|) InVars {rec1_#res=|v_rec1_#resOutParam_4|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_4|} AuxVars[] AssignedVars[rec2_#t~ret3] LVA: Formula: (= |v_rec1_#in~iInParam_4| (+ v_rec2_~j_5 1)) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i] 53#L20-1 [57] L20-1-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 51#rec2ENTRY [2020-06-22 05:26:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:26:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2474, now seen corresponding path program 2 times [2020-06-22 05:26:14,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:26:14,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:26:14,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:26:14,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:26:14,352 INFO L82 PathProgramCache]: Analyzing trace with hash -129367784, now seen corresponding path program 1 times [2020-06-22 05:26:14,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:26:14,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:26:14,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:26:14,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:26:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash -287187007, now seen corresponding path program 1 times [2020-06-22 05:26:14,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:26:14,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:26:14,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:26:14,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:26:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:26:14,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:26:14 BasicIcfg [2020-06-22 05:26:14,810 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 05:26:14,810 INFO L168 Benchmark]: Toolchain (without parser) took 1692.80 ms. Allocated memory was 649.6 MB in the beginning and 704.6 MB in the end (delta: 55.1 MB). Free memory was 565.2 MB in the beginning and 550.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,814 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 05:26:14,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.48 ms. Allocated memory was 649.6 MB in the beginning and 704.6 MB in the end (delta: 55.1 MB). Free memory was 565.2 MB in the beginning and 670.0 MB in the end (delta: -104.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.90 ms. Allocated memory is still 704.6 MB. Free memory was 670.0 MB in the beginning and 668.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,816 INFO L168 Benchmark]: Boogie Preprocessor took 16.18 ms. Allocated memory is still 704.6 MB. Free memory was 668.6 MB in the beginning and 667.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,816 INFO L168 Benchmark]: RCFGBuilder took 224.87 ms. Allocated memory is still 704.6 MB. Free memory was 667.3 MB in the beginning and 651.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,817 INFO L168 Benchmark]: BlockEncodingV2 took 72.70 ms. Allocated memory is still 704.6 MB. Free memory was 651.0 MB in the beginning and 646.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,817 INFO L168 Benchmark]: TraceAbstraction took 180.11 ms. Allocated memory is still 704.6 MB. Free memory was 646.9 MB in the beginning and 634.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,818 INFO L168 Benchmark]: BuchiAutomizer took 860.65 ms. Allocated memory is still 704.6 MB. Free memory was 633.5 MB in the beginning and 550.3 MB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 50.3 GB. [2020-06-22 05:26:14,822 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 21 locations, 26 edges - StatisticsResult: Encoded RCFG 17 locations, 22 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 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 299.48 ms. Allocated memory was 649.6 MB in the beginning and 704.6 MB in the end (delta: 55.1 MB). Free memory was 565.2 MB in the beginning and 670.0 MB in the end (delta: -104.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.90 ms. Allocated memory is still 704.6 MB. Free memory was 670.0 MB in the beginning and 668.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 16.18 ms. Allocated memory is still 704.6 MB. Free memory was 668.6 MB in the beginning and 667.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 224.87 ms. Allocated memory is still 704.6 MB. Free memory was 667.3 MB in the beginning and 651.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.70 ms. Allocated memory is still 704.6 MB. Free memory was 651.0 MB in the beginning and 646.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 180.11 ms. Allocated memory is still 704.6 MB. Free memory was 646.9 MB in the beginning and 634.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 860.65 ms. Allocated memory is still 704.6 MB. Free memory was 633.5 MB in the beginning and 550.3 MB in the end (delta: 83.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 0 error locations. SAFE Result, 0.1s 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=17occurred 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, 8 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 8 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 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 5 locations. The remainder module has 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:4. Analysis of lassos took 0.6s. 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 16 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 17 SDtfs, 7 SDslu, 32 SDs, 0 SdLazy, 34 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ec39497=0, \old(j)=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c529bf8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71b883f6=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5204bc87=0, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L24] int x = __VERIFIER_nondet_int(); [L25] CALL rec2(x) Loop: [L18] COND FALSE !(j <= 0) [L20] CALL, EXPR rec1(j+1) [L12] COND FALSE !(i <= 0) [L14] CALL, EXPR rec1(i-2) [L12] COND TRUE i <= 0 [L13] return 0; [L14] RET, EXPR rec1(i-2) [L14] CALL, EXPR rec1(rec1(i-2) - 1) [L12] COND TRUE i <= 0 [L13] return 0; [L14] RET, EXPR rec1(rec1(i-2) - 1) [L14] CALL, EXPR rec1(rec1(rec1(i-2) - 1)) [L12] COND TRUE i <= 0 [L13] return 0; [L14] RET, EXPR rec1(rec1(rec1(i-2) - 1)) [L14] return rec1(rec1(rec1(i-2) - 1)) + 1; [L20] RET, EXPR rec1(j+1) [L20] CALL rec2(rec1(j+1)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 05:26:09.856 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 05:26:15.060 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check