MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:08:24,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:08:24,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:08:24,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:08:24,714 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:08:24,715 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:08:24,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:08:24,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:08:24,719 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:08:24,720 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:08:24,721 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:08:24,721 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:08:24,722 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:08:24,723 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:08:24,724 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:08:24,725 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:08:24,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:08:24,727 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:08:24,729 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:08:24,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:08:24,731 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:08:24,732 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:08:24,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:08:24,736 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:08:24,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:08:24,737 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:08:24,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:08:24,738 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:08:24,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:08:24,739 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:08:24,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:08:24,740 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:08:24,741 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:08:24,741 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:08:24,742 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:08:24,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:08:24,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:08:24,743 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:08:24,744 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:08:24,744 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 08:08:24,758 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:08:24,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:08:24,759 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:08:24,760 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:08:24,760 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:08:24,761 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:08:24,761 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:08:24,761 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:08:24,761 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:08:24,761 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:08:24,761 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:08:24,762 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:08:24,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:08:24,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:08:24,762 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:08:24,762 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:08:24,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:08:24,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:08:24,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:08:24,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:08:24,803 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:08:24,806 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:08:24,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:08:24,808 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:08:24,809 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:08:24,886 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/d07c4ec68f144430ad2dbdab63eb58e1/FLAG93357b060 [2020-06-22 08:08:25,220 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:08:25,221 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 08:08:25,227 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/d07c4ec68f144430ad2dbdab63eb58e1/FLAG93357b060 [2020-06-22 08:08:25,637 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/d07c4ec68f144430ad2dbdab63eb58e1 [2020-06-22 08:08:25,649 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:08:25,651 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:08:25,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:08:25,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:08:25,656 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:08:25,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:25,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80e7289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25, skipping insertion in model container [2020-06-22 08:08:25,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:25,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:08:25,685 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:08:25,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:08:25,911 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:08:25,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:08:25,946 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:08:25,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25 WrapperNode [2020-06-22 08:08:25,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:08:25,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:08:25,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:08:25,948 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:08:25,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:25,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:25,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:08:25,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:08:25,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:08:25,989 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:08:25,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:25,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (1/1) ... [2020-06-22 08:08:26,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:08:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:08:26,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:08:26,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:08:26,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (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 08:08:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 08:08:26,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:08:26,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:08:26,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 08:08:26,362 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:08:26,362 INFO L286 CfgBuilder]: Removed 8 assue(true) statements. [2020-06-22 08:08:26,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:08:26 BoogieIcfgContainer [2020-06-22 08:08:26,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:08:26,365 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:08:26,365 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:08:26,367 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:08:26,368 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:08:26" (1/1) ... [2020-06-22 08:08:26,385 INFO L313 BlockEncoder]: Initial Icfg 29 locations, 33 edges [2020-06-22 08:08:26,387 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:08:26,387 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:08:26,388 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:08:26,388 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:08:26,390 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:08:26,391 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:08:26,391 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:08:26,413 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:08:26,439 INFO L200 BlockEncoder]: SBE split 12 edges [2020-06-22 08:08:26,444 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 08:08:26,446 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:08:26,496 INFO L100 BaseMinimizeStates]: Removed 14 edges and 7 locations by large block encoding [2020-06-22 08:08:26,499 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 08:08:26,501 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:08:26,501 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:08:26,501 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:08:26,502 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:08:26,502 INFO L313 BlockEncoder]: Encoded RCFG 21 locations, 35 edges [2020-06-22 08:08:26,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:08:26 BasicIcfg [2020-06-22 08:08:26,503 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:08:26,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:08:26,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:08:26,508 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:08:26,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:08:25" (1/4) ... [2020-06-22 08:08:26,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56799a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:08:26, skipping insertion in model container [2020-06-22 08:08:26,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:08:25" (2/4) ... [2020-06-22 08:08:26,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56799a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:08:26, skipping insertion in model container [2020-06-22 08:08:26,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:08:26" (3/4) ... [2020-06-22 08:08:26,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56799a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:08:26, skipping insertion in model container [2020-06-22 08:08:26,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:08:26" (4/4) ... [2020-06-22 08:08:26,513 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:08:26,524 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:08:26,532 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-06-22 08:08:26,549 INFO L257 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-06-22 08:08:26,577 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:08:26,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:08:26,578 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:08:26,578 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:08:26,578 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:08:26,578 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:08:26,579 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:08:26,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:08:26,579 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:08:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-06-22 08:08:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-06-22 08:08:26,600 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:08:26,600 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-06-22 08:08:26,602 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-06-22 08:08:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:08:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash 154700, now seen corresponding path program 1 times [2020-06-22 08:08:26,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:08:26,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:08:26,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:08:26,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:08:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:08:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:08:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:08:26,732 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 08:08:26,751 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 08:08:26,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:08:26 BasicIcfg [2020-06-22 08:08:26,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:08:26,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:08:26,755 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:08:26,758 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:08:26,759 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:08:26,759 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:08:26,759 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:08:26,759 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:08:26,759 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:08:26,759 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:08:26,760 INFO L168 Benchmark]: Toolchain (without parser) took 1110.64 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 565.2 MB in the beginning and 600.2 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:08:26,762 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:08:26,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.52 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 565.2 MB in the beginning and 647.2 MB in the end (delta: -81.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 683.1 MB. Free memory was 647.2 MB in the beginning and 645.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,764 INFO L168 Benchmark]: Boogie Preprocessor took 24.96 ms. Allocated memory is still 683.1 MB. Free memory was 645.0 MB in the beginning and 642.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,765 INFO L168 Benchmark]: RCFGBuilder took 349.74 ms. Allocated memory is still 683.1 MB. Free memory was 642.9 MB in the beginning and 623.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,766 INFO L168 Benchmark]: BlockEncodingV2 took 138.26 ms. Allocated memory is still 683.1 MB. Free memory was 623.9 MB in the beginning and 615.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,766 INFO L168 Benchmark]: TraceAbstraction took 250.98 ms. Allocated memory is still 683.1 MB. Free memory was 615.3 MB in the beginning and 600.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:08:26,767 INFO L168 Benchmark]: BuchiAutomizer took 4.54 ms. Allocated memory is still 683.1 MB. Free memory is still 600.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:08:26,771 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 33 edges - StatisticsResult: Encoded RCFG 21 locations, 35 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.52 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 565.2 MB in the beginning and 647.2 MB in the end (delta: -81.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 683.1 MB. Free memory was 647.2 MB in the beginning and 645.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 24.96 ms. Allocated memory is still 683.1 MB. Free memory was 645.0 MB in the beginning and 642.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 349.74 ms. Allocated memory is still 683.1 MB. Free memory was 642.9 MB in the beginning and 623.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 138.26 ms. Allocated memory is still 683.1 MB. Free memory was 623.9 MB in the beginning and 615.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * TraceAbstraction took 250.98 ms. Allocated memory is still 683.1 MB. Free memory was 615.3 MB in the beginning and 600.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4.54 ms. Allocated memory is still 683.1 MB. Free memory is still 600.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L18] int *a; [L19] int N = __VERIFIER_nondet_int(); [L5] int i, j, v; [L6] i = 2 [L6] COND TRUE i <= N [L7] a[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 10 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 08:08:22.399 ----------------------------------------------- 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 08:08:27.005 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check