YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 02:28:57,020 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 02:28:57,022 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 02:28:57,034 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 02:28:57,034 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 02:28:57,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 02:28:57,036 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 02:28:57,038 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 02:28:57,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 02:28:57,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 02:28:57,041 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 02:28:57,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 02:28:57,042 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 02:28:57,043 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 02:28:57,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 02:28:57,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 02:28:57,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 02:28:57,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 02:28:57,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 02:28:57,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 02:28:57,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 02:28:57,052 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 02:28:57,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 02:28:57,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 02:28:57,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 02:28:57,056 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 02:28:57,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 02:28:57,057 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 02:28:57,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 02:28:57,058 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 02:28:57,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 02:28:57,060 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 02:28:57,061 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 02:28:57,061 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 02:28:57,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 02:28:57,062 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 02:28:57,062 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 02:28:57,063 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 02:28:57,064 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 02:28:57,064 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 02:28:57,079 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 02:28:57,080 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 02:28:57,081 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 02:28:57,081 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 02:28:57,081 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 02:28:57,081 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 02:28:57,082 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 02:28:57,082 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 02:28:57,082 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 02:28:57,082 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 02:28:57,082 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 02:28:57,083 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 02:28:57,083 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 02:28:57,083 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 02:28:57,083 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:57,083 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 02:28:57,083 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 02:28:57,084 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 02:28:57,084 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 02:28:57,084 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 02:28:57,084 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 02:28:57,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 02:28:57,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 02:28:57,085 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 02:28:57,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 02:28:57,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 02:28:57,085 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 02:28:57,085 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 02:28:57,086 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 02:28:57,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 02:28:57,124 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 02:28:57,128 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 02:28:57,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 02:28:57,130 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 02:28:57,130 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 02:28:57,199 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/913b5887fa9846bfa41d50c73fb481dd/FLAG749897a0a [2020-06-22 02:28:57,538 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 02:28:57,539 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 02:28:57,546 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/913b5887fa9846bfa41d50c73fb481dd/FLAG749897a0a [2020-06-22 02:28:57,959 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/913b5887fa9846bfa41d50c73fb481dd [2020-06-22 02:28:57,971 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 02:28:57,972 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 02:28:57,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 02:28:57,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 02:28:57,977 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 02:28:57,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 02:28:57" (1/1) ... [2020-06-22 02:28:57,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306a8bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:57, skipping insertion in model container [2020-06-22 02:28:57,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 02:28:57" (1/1) ... [2020-06-22 02:28:57,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 02:28:58,007 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 02:28:58,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 02:28:58,166 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 02:28:58,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 02:28:58,246 INFO L195 MainTranslator]: Completed translation [2020-06-22 02:28:58,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58 WrapperNode [2020-06-22 02:28:58,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 02:28:58,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 02:28:58,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 02:28:58,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 02:28:58,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 02:28:58,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 02:28:58,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 02:28:58,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 02:28:58,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 02:28:58,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 02:28:58,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 02:28:58,303 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 02:28:58,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (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 02:28:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 02:28:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 02:28:58,597 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 02:28:58,597 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 02:28:58,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:28:58 BoogieIcfgContainer [2020-06-22 02:28:58,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 02:28:58,599 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 02:28:58,600 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 02:28:58,602 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 02:28:58,602 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:28:58" (1/1) ... [2020-06-22 02:28:58,617 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 02:28:58,619 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 02:28:58,619 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 02:28:58,620 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 02:28:58,620 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 02:28:58,622 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 02:28:58,623 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 02:28:58,624 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 02:28:58,638 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 02:28:58,645 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-22 02:28:58,650 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 02:28:58,651 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 02:28:58,666 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-06-22 02:28:58,668 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 02:28:58,669 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 02:28:58,670 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 02:28:58,670 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 02:28:58,670 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 02:28:58,670 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-22 02:28:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:28:58 BasicIcfg [2020-06-22 02:28:58,671 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 02:28:58,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 02:28:58,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 02:28:58,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 02:28:58,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 02:28:57" (1/4) ... [2020-06-22 02:28:58,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793faf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (2/4) ... [2020-06-22 02:28:58,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793faf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:28:58" (3/4) ... [2020-06-22 02:28:58,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793faf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:28:58" (4/4) ... [2020-06-22 02:28:58,679 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 02:28:58,689 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 02:28:58,697 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 02:28:58,716 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 02:28:58,745 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 02:28:58,746 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 02:28:58,746 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 02:28:58,746 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 02:28:58,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 02:28:58,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 02:28:58,747 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 02:28:58,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 02:28:58,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 02:28:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 02:28:58,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 02:28:58,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 02:28:58,821 INFO L451 ceAbstractionStarter]: At program point L19-2(lines 19 21) the Hoare annotation is: true [2020-06-22 02:28:58,821 INFO L451 ceAbstractionStarter]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-06-22 02:28:58,821 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 02:28:58,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:28:58 BasicIcfg [2020-06-22 02:28:58,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 02:28:58,831 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 02:28:58,831 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 02:28:58,834 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 02:28:58,835 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:28:58,836 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 02:28:57" (1/5) ... [2020-06-22 02:28:58,836 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a64c077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,836 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:28:58,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:28:58" (2/5) ... [2020-06-22 02:28:58,837 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a64c077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,837 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:28:58,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:28:58" (3/5) ... [2020-06-22 02:28:58,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a64c077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,838 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:28:58,838 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:28:58" (4/5) ... [2020-06-22 02:28:58,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a64c077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:28:58, skipping insertion in model container [2020-06-22 02:28:58,838 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:28:58,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:28:58" (5/5) ... [2020-06-22 02:28:58,840 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 02:28:58,868 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 02:28:58,869 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 02:28:58,869 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 02:28:58,869 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 02:28:58,869 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 02:28:58,869 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 02:28:58,869 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 02:28:58,869 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 02:28:58,870 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 02:28:58,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 02:28:58,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 02:28:58,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 02:28:58,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 02:28:58,895 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 02:28:58,896 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 02:28:58,896 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 02:28:58,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 02:28:58,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 02:28:58,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 02:28:58,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 02:28:58,897 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 02:28:58,897 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 02:28:58,902 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 3#L17-2true [2020-06-22 02:28:58,903 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [33] L17-2-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_11) (= v_ULTIMATE.start_main_~y~0_9 1)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 5#L19-2true [45] L19-2-->L17-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_14 (- 1)) v_ULTIMATE.start_main_~x~0_13) (<= v_ULTIMATE.start_main_~x~0_14 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L17-2true [2020-06-22 02:28:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:58,909 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-06-22 02:28:58,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:58,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:58,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:58,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:58,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:58,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2029, now seen corresponding path program 1 times [2020-06-22 02:28:58,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:58,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:58,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:58,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:58,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash 63533, now seen corresponding path program 1 times [2020-06-22 02:28:58,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:58,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:58,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:58,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:58,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,071 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 02:28:59,072 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 02:28:59,072 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 02:28:59,072 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 02:28:59,072 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 02:28:59,072 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,073 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 02:28:59,073 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 02:28:59,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 02:28:59,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 02:28:59,073 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 02:28:59,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,213 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 02:28:59,214 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,222 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,222 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,257 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 02:28:59,257 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,263 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,263 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,290 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 02:28:59,290 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,295 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,295 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 02:28:59,329 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,363 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 02:28:59,366 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 02:28:59,366 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 02:28:59,366 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 02:28:59,366 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 02:28:59,366 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 02:28:59,366 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 02:28:59,366 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 02:28:59,367 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 02:28:59,367 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 02:28:59,367 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 02:28:59,367 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 02:28:59,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,475 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 02:28:59,481 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 02:28:59,483 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 02:28:59,485 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 02:28:59,485 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 02:28:59,485 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 02:28:59,485 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 02:28:59,490 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 02:28:59,490 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 02:28:59,499 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 02:28:59,500 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 02:28:59,501 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 02:28:59,501 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 02:28:59,501 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 02:28:59,501 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 02:28:59,504 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 02:28:59,504 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 02:28:59,513 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 02:28:59,513 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 02:28:59,514 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 02:28:59,514 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 02:28:59,515 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 02:28:59,515 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 02:28:59,515 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 02:28:59,516 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 02:28:59,517 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 02:28:59,525 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 02:28:59,532 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 02:28:59,533 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 02:28:59,535 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 02:28:59,535 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 02:28:59,536 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 02:28:59,536 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-22 02:28:59,538 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 02:28:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 02:28:59,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 02:28:59,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 02:28:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 02:28:59,586 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 02:28:59,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 02:28:59,603 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 02:28:59,629 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 02:28:59,634 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-22 02:28:59,636 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 02:28:59,666 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-06-22 02:28:59,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 02:28:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 02:28:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-06-22 02:28:59,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 02:28:59,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:28:59,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 02:28:59,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:28:59,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 02:28:59,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:28:59,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-06-22 02:28:59,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 02:28:59,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-06-22 02:28:59,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-22 02:28:59,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 02:28:59,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-06-22 02:28:59,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 02:28:59,686 INFO L706 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-06-22 02:28:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-06-22 02:28:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-06-22 02:28:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 02:28:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-22 02:28:59,714 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 02:28:59,714 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-22 02:28:59,715 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 02:28:59,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-06-22 02:28:59,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 02:28:59,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 02:28:59,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 02:28:59,716 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 02:28:59,716 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 02:28:59,716 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 42#L17-2 [33] L17-2-->L19-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~x~0_11) (= v_ULTIMATE.start_main_~y~0_9 1)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 44#L19-2 [2020-06-22 02:28:59,717 INFO L796 eck$LassoCheckResult]: Loop: 44#L19-2 [38] L19-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_7 (* 2 v_ULTIMATE.start_main_~y~0_8)) (< v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~x~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 44#L19-2 [2020-06-22 02:28:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2020-06-22 02:28:59,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:59,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:59,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:59,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:59,725 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-06-22 02:28:59,725 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:59,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:59,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:28:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash 63526, now seen corresponding path program 1 times [2020-06-22 02:28:59,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:28:59,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:28:59,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:28:59,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:28:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:28:59,773 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 02:28:59,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 02:28:59,773 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 02:28:59,773 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 02:28:59,773 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 02:28:59,773 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 02:28:59,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 02:28:59,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-06-22 02:28:59,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 02:28:59,774 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 02:28:59,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:28:59,876 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 02:28:59,876 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,913 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 02:28:59,913 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,920 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,920 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,925 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 02:28:59,925 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:28:59,980 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:28:59,981 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:28:59,985 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 02:28:59,985 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:29:00,018 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 02:29:00,018 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:29:00,053 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 02:29:00,053 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 02:29:00,171 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 02:29:00,174 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 02:29:00,174 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 02:29:00,174 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 02:29:00,174 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 02:29:00,174 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 02:29:00,174 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 02:29:00,175 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 02:29:00,175 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 02:29:00,175 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-06-22 02:29:00,175 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 02:29:00,175 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 02:29:00,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 02:29:00,263 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 02:29:00,263 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 02:29:00,264 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 02:29:00,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 02:29:00,265 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 02:29:00,265 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 02:29:00,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 02:29:00,271 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 02:29:00,271 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 02:29:00,312 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 02:29:00,333 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 02:29:00,333 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 02:29:00,334 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 02:29:00,336 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-06-22 02:29:00,337 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 02:29:00,337 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-06-22 02:29:00,343 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-06-22 02:29:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:29:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 02:29:00,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-22 02:29:00,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 02:29:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 02:29:00,399 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 02:29:00,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 02:29:00,400 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 02:29:00,423 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 02:29:00,423 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-22 02:29:00,424 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-06-22 02:29:00,478 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 17 states and 26 transitions. Complement of second has 10 states. [2020-06-22 02:29:00,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 02:29:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-22 02:29:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-06-22 02:29:00,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters. [2020-06-22 02:29:00,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:29:00,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2020-06-22 02:29:00,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:29:00,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-22 02:29:00,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 02:29:00,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2020-06-22 02:29:00,484 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 02:29:00,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-06-22 02:29:00,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 02:29:00,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 02:29:00,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 02:29:00,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 02:29:00,484 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 02:29:00,485 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 02:29:00,485 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 02:29:00,485 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 02:29:00,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 02:29:00,485 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 02:29:00,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 02:29:00,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:29:00 BasicIcfg [2020-06-22 02:29:00,492 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 02:29:00,492 INFO L168 Benchmark]: Toolchain (without parser) took 2520.92 ms. Allocated memory was 514.9 MB in the beginning and 600.8 MB in the end (delta: 86.0 MB). Free memory was 440.6 MB in the beginning and 517.1 MB in the end (delta: -76.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,494 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 02:29:00,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.90 ms. Allocated memory was 514.9 MB in the beginning and 566.2 MB in the end (delta: 51.4 MB). Free memory was 440.1 MB in the beginning and 535.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 566.2 MB. Free memory was 535.0 MB in the beginning and 533.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,496 INFO L168 Benchmark]: Boogie Preprocessor took 19.20 ms. Allocated memory is still 566.2 MB. Free memory was 533.4 MB in the beginning and 532.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,497 INFO L168 Benchmark]: RCFGBuilder took 296.78 ms. Allocated memory is still 566.2 MB. Free memory was 532.3 MB in the beginning and 521.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,497 INFO L168 Benchmark]: BlockEncodingV2 took 71.68 ms. Allocated memory is still 566.2 MB. Free memory was 521.2 MB in the beginning and 516.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,498 INFO L168 Benchmark]: TraceAbstraction took 158.47 ms. Allocated memory is still 566.2 MB. Free memory was 515.7 MB in the beginning and 506.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,498 INFO L168 Benchmark]: BuchiAutomizer took 1660.66 ms. Allocated memory was 566.2 MB in the beginning and 600.8 MB in the end (delta: 34.6 MB). Free memory was 506.9 MB in the beginning and 517.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 50.3 GB. [2020-06-22 02:29:00,503 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 273.90 ms. Allocated memory was 514.9 MB in the beginning and 566.2 MB in the end (delta: 51.4 MB). Free memory was 440.1 MB in the beginning and 535.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.47 ms. Allocated memory is still 566.2 MB. Free memory was 535.0 MB in the beginning and 533.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.20 ms. Allocated memory is still 566.2 MB. Free memory was 533.4 MB in the beginning and 532.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 296.78 ms. Allocated memory is still 566.2 MB. Free memory was 532.3 MB in the beginning and 521.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.68 ms. Allocated memory is still 566.2 MB. Free memory was 521.2 MB in the beginning and 516.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. * TraceAbstraction took 158.47 ms. Allocated memory is still 566.2 MB. Free memory was 515.7 MB in the beginning and 506.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1660.66 ms. Allocated memory was 566.2 MB in the beginning and 600.8 MB in the end (delta: 34.6 MB). Free memory was 506.9 MB in the beginning and 517.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 16 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax175 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf92 smp100 dnf100 smp100 tf104 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 02:28:54.666 ----------------------------------------------- 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 02:29:00.739 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check