NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 10:36:09,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 10:36:09,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 10:36:09,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 10:36:09,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 10:36:09,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 10:36:09,602 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 10:36:09,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 10:36:09,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 10:36:09,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 10:36:09,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 10:36:09,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 10:36:09,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 10:36:09,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 10:36:09,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 10:36:09,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 10:36:09,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 10:36:09,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 10:36:09,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 10:36:09,616 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 10:36:09,617 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 10:36:09,618 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 10:36:09,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 10:36:09,620 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 10:36:09,620 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 10:36:09,621 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 10:36:09,621 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 10:36:09,622 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 10:36:09,623 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 10:36:09,623 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 10:36:09,624 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 10:36:09,625 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 10:36:09,626 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 10:36:09,626 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 10:36:09,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 10:36:09,627 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 10:36:09,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 10:36:09,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 10:36:09,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 10:36:09,628 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 10:36:09,643 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 10:36:09,643 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 10:36:09,644 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 10:36:09,644 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 10:36:09,645 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 10:36:09,645 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 10:36:09,645 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 10:36:09,645 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 10:36:09,645 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 10:36:09,645 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 10:36:09,646 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 10:36:09,646 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 10:36:09,646 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 10:36:09,646 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 10:36:09,646 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 10:36:09,646 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 10:36:09,647 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 10:36:09,647 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 10:36:09,647 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 10:36:09,647 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 10:36:09,647 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 10:36:09,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 10:36:09,648 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 10:36:09,648 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 10:36:09,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 10:36:09,648 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 10:36:09,648 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 10:36:09,649 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 10:36:09,649 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 10:36:09,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 10:36:09,686 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 10:36:09,690 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 10:36:09,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 10:36:09,692 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 10:36:09,692 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 10:36:09,762 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/23d58b57a7264284bd17c6330986474f/FLAG5019d0fbd [2020-06-22 10:36:10,087 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 10:36:10,087 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 10:36:10,094 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/23d58b57a7264284bd17c6330986474f/FLAG5019d0fbd [2020-06-22 10:36:10,500 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/23d58b57a7264284bd17c6330986474f [2020-06-22 10:36:10,511 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 10:36:10,513 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 10:36:10,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 10:36:10,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 10:36:10,518 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 10:36:10,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509e5902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10, skipping insertion in model container [2020-06-22 10:36:10,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 10:36:10,547 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 10:36:10,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 10:36:10,704 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 10:36:10,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 10:36:10,795 INFO L195 MainTranslator]: Completed translation [2020-06-22 10:36:10,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10 WrapperNode [2020-06-22 10:36:10,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 10:36:10,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 10:36:10,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 10:36:10,797 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 10:36:10,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 10:36:10,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 10:36:10,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 10:36:10,831 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 10:36:10,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (1/1) ... [2020-06-22 10:36:10,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 10:36:10,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 10:36:10,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 10:36:10,849 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 10:36:10,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (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 10:36:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 10:36:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 10:36:11,018 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 10:36:11,018 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 10:36:11,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:36:11 BoogieIcfgContainer [2020-06-22 10:36:11,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 10:36:11,020 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 10:36:11,020 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 10:36:11,022 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 10:36:11,023 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:36:11" (1/1) ... [2020-06-22 10:36:11,036 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-06-22 10:36:11,038 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 10:36:11,038 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 10:36:11,039 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 10:36:11,039 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 10:36:11,041 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 10:36:11,042 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 10:36:11,042 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 10:36:11,058 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 10:36:11,069 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 10:36:11,073 INFO L70 emoveInfeasibleEdges]: Removed 5 edges and 4 locations because of local infeasibility [2020-06-22 10:36:11,075 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 10:36:11,077 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 10:36:11,078 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 10:36:11,080 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 10:36:11,080 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 10:36:11,080 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 10:36:11,080 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 10:36:11,081 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 3 edges [2020-06-22 10:36:11,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:36:11 BasicIcfg [2020-06-22 10:36:11,081 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 10:36:11,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 10:36:11,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 10:36:11,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 10:36:11,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 10:36:10" (1/4) ... [2020-06-22 10:36:11,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2694f892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (2/4) ... [2020-06-22 10:36:11,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2694f892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:36:11" (3/4) ... [2020-06-22 10:36:11,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2694f892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:36:11" (4/4) ... [2020-06-22 10:36:11,091 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 10:36:11,101 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 10:36:11,108 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 10:36:11,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 10:36:11,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 10:36:11,153 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 10:36:11,153 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 10:36:11,153 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 10:36:11,154 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 10:36:11,154 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 10:36:11,154 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 10:36:11,154 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 10:36:11,154 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 10:36:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-06-22 10:36:11,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 10:36:11,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-06-22 10:36:11,228 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 10:36:11,229 INFO L451 ceAbstractionStarter]: At program point L9-2(line 9) the Hoare annotation is: true [2020-06-22 10:36:11,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:36:11 BasicIcfg [2020-06-22 10:36:11,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 10:36:11,237 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 10:36:11,237 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 10:36:11,240 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 10:36:11,241 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:36:11,241 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 10:36:10" (1/5) ... [2020-06-22 10:36:11,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0a16b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,242 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:36:11,242 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 10:36:10" (2/5) ... [2020-06-22 10:36:11,242 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0a16b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,243 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:36:11,243 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:36:11" (3/5) ... [2020-06-22 10:36:11,243 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0a16b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,243 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:36:11,244 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 10:36:11" (4/5) ... [2020-06-22 10:36:11,244 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b0a16b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:36:11, skipping insertion in model container [2020-06-22 10:36:11,244 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 10:36:11,244 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:36:11" (5/5) ... [2020-06-22 10:36:11,246 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 10:36:11,272 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 10:36:11,273 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 10:36:11,273 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 10:36:11,273 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 10:36:11,273 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 10:36:11,273 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 10:36:11,273 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 10:36:11,273 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 10:36:11,274 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 10:36:11,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-22 10:36:11,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 10:36:11,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:36:11,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:36:11,299 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 10:36:11,299 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 10:36:11,299 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 10:36:11,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-06-22 10:36:11,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 10:36:11,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 10:36:11,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 10:36:11,301 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 10:36:11,301 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 10:36:11,306 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L9-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 4#L9-2true [2020-06-22 10:36:11,306 INFO L796 eck$LassoCheckResult]: Loop: 4#L9-2true [26] L9-2-->L9-2: Formula: (< 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 4#L9-2true [2020-06-22 10:36:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:36:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-06-22 10:36:11,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:36:11,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:36:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:36:11,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:36:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-06-22 10:36:11,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:36:11,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:36:11,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:36:11,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 10:36:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1545, now seen corresponding path program 1 times [2020-06-22 10:36:11,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 10:36:11,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 10:36:11,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 10:36:11,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 10:36:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 10:36:11,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] [2020-06-22 10:36:11,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 10:36:11 BasicIcfg [2020-06-22 10:36:11,450 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 10:36:11,450 INFO L168 Benchmark]: Toolchain (without parser) took 938.56 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 558.8 MB in the beginning and 614.4 MB in the end (delta: -55.6 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 10:36:11,452 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 10:36:11,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.27 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 558.8 MB in the beginning and 658.6 MB in the end (delta: -99.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 691.0 MB. Free memory was 658.6 MB in the beginning and 657.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,455 INFO L168 Benchmark]: Boogie Preprocessor took 18.42 ms. Allocated memory is still 691.0 MB. Free memory was 657.2 MB in the beginning and 655.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,456 INFO L168 Benchmark]: RCFGBuilder took 170.52 ms. Allocated memory is still 691.0 MB. Free memory was 655.9 MB in the beginning and 642.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,457 INFO L168 Benchmark]: BlockEncodingV2 took 61.32 ms. Allocated memory is still 691.0 MB. Free memory was 642.6 MB in the beginning and 638.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,458 INFO L168 Benchmark]: TraceAbstraction took 154.16 ms. Allocated memory is still 691.0 MB. Free memory was 637.2 MB in the beginning and 628.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,459 INFO L168 Benchmark]: BuchiAutomizer took 213.09 ms. Allocated memory is still 691.0 MB. Free memory was 628.0 MB in the beginning and 614.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. [2020-06-22 10:36:11,466 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 7 edges - StatisticsResult: Encoded RCFG 2 locations, 3 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 282.27 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 558.8 MB in the beginning and 658.6 MB in the end (delta: -99.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.65 ms. Allocated memory is still 691.0 MB. Free memory was 658.6 MB in the beginning and 657.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.42 ms. Allocated memory is still 691.0 MB. Free memory was 657.2 MB in the beginning and 655.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 170.52 ms. Allocated memory is still 691.0 MB. Free memory was 655.9 MB in the beginning and 642.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 61.32 ms. Allocated memory is still 691.0 MB. Free memory was 642.6 MB in the beginning and 638.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.16 ms. Allocated memory is still 691.0 MB. Free memory was 637.2 MB in the beginning and 628.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 213.09 ms. Allocated memory is still 691.0 MB. Free memory was 628.0 MB in the beginning and 614.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 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: 9]: Nontermination argument in form of an infinite program execution. [2020-06-22 10:36:11,482 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] [2020-06-22 10:36:11,483 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {freshIdentifier3=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@cd41cb4=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 10:36:07.322 ----------------------------------------------- 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 10:36:11.707 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check