YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:40:24,484 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:40:24,487 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:40:24,498 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:40:24,498 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:40:24,499 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:40:24,500 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:40:24,502 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:40:24,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:40:24,504 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:40:24,505 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:40:24,505 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:40:24,506 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:40:24,507 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:40:24,508 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:40:24,508 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:40:24,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:40:24,511 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:40:24,513 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:40:24,514 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:40:24,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:40:24,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:40:24,518 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:40:24,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:40:24,519 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:40:24,519 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:40:24,520 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:40:24,521 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:40:24,521 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:40:24,522 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:40:24,522 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:40:24,523 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:40:24,524 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:40:24,524 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:40:24,525 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:40:24,525 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:40:24,525 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:40:24,526 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:40:24,527 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:40:24,527 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-21 23:40:24,541 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:40:24,542 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:40:24,543 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:40:24,543 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:40:24,543 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:40:24,543 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:40:24,543 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:40:24,543 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:40:24,544 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:40:24,545 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:24,545 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:40:24,545 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:40:24,545 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:40:24,545 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:40:24,545 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:40:24,546 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:40:24,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:40:24,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:40:24,546 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:40:24,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:40:24,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:40:24,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:40:24,547 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:40:24,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:40:24,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:40:24,585 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:40:24,588 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:40:24,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:40:24,590 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:40:24,591 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:40:24,654 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/8a98f46481bc43cea918030ba6102a9d/FLAG9323cd677 !SESSION 2020-06-21 23:40:22.173 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-21 23:40:24.916 !MESSAGE Indexed 'FLAG9323cd677' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-21 23:40:25,010 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:40:25,011 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:40:25,018 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/8a98f46481bc43cea918030ba6102a9d/FLAG9323cd677 [2020-06-21 23:40:25,449 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/8a98f46481bc43cea918030ba6102a9d [2020-06-21 23:40:25,461 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:40:25,463 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:40:25,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:40:25,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:40:25,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:40:25,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2215b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25, skipping insertion in model container [2020-06-21 23:40:25,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:40:25,498 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:40:25,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:40:25,662 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:40:25,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:40:25,753 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:40:25,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25 WrapperNode [2020-06-21 23:40:25,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:40:25,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:40:25,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:40:25,755 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:40:25,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:40:25,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:40:25,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:40:25,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:40:25,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... [2020-06-21 23:40:25,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:40:25,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:40:25,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:40:25,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:40:25,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:40:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:40:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:40:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-06-21 23:40:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-06-21 23:40:26,007 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:40:26,007 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2020-06-21 23:40:26,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:40:26 BoogieIcfgContainer [2020-06-21 23:40:26,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:40:26,009 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:40:26,009 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:40:26,011 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:40:26,012 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:40:26" (1/1) ... [2020-06-21 23:40:26,027 INFO L313 BlockEncoder]: Initial Icfg 17 locations, 21 edges [2020-06-21 23:40:26,029 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:40:26,029 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:40:26,030 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:40:26,030 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:40:26,032 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:40:26,033 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:40:26,033 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:40:26,048 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:40:26,062 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-21 23:40:26,066 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 23:40:26,069 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:40:26,078 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 23:40:26,081 INFO L70 RemoveSinkStates]: Removed 6 edges and 5 locations by removing sink states [2020-06-21 23:40:26,082 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:40:26,083 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:40:26,083 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:40:26,083 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:40:26,084 INFO L313 BlockEncoder]: Encoded RCFG 10 locations, 14 edges [2020-06-21 23:40:26,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:40:26 BasicIcfg [2020-06-21 23:40:26,084 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:40:26,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:40:26,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:40:26,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:40:26,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:40:25" (1/4) ... [2020-06-21 23:40:26,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bec7c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (2/4) ... [2020-06-21 23:40:26,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bec7c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:40:26" (3/4) ... [2020-06-21 23:40:26,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bec7c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:40:26" (4/4) ... [2020-06-21 23:40:26,093 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:40:26,103 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:40:26,110 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:40:26,126 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:40:26,154 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:40:26,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:40:26,155 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:40:26,155 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:40:26,156 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:40:26,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:40:26,156 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:40:26,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:40:26,156 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:40:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-06-21 23:40:26,179 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:40:26,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-06-21 23:40:26,240 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:40:26,241 INFO L451 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: true [2020-06-21 23:40:26,241 INFO L448 ceAbstractionStarter]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-06-21 23:40:26,241 INFO L451 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: true [2020-06-21 23:40:26,242 INFO L451 ceAbstractionStarter]: At program point L11-1(line 11) the Hoare annotation is: true [2020-06-21 23:40:26,242 INFO L448 ceAbstractionStarter]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-06-21 23:40:26,242 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-06-21 23:40:26,242 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-06-21 23:40:26,242 INFO L451 ceAbstractionStarter]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-06-21 23:40:26,243 INFO L448 ceAbstractionStarter]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-06-21 23:40:26,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:40:26 BasicIcfg [2020-06-21 23:40:26,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:40:26,246 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:40:26,247 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:40:26,250 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:40:26,251 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:40:26,251 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:40:25" (1/5) ... [2020-06-21 23:40:26,252 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9419899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,252 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:40:26,252 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:40:25" (2/5) ... [2020-06-21 23:40:26,252 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9419899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,252 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:40:26,252 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:40:26" (3/5) ... [2020-06-21 23:40:26,253 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9419899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,253 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:40:26,253 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:40:26" (4/5) ... [2020-06-21 23:40:26,253 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9419899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:40:26, skipping insertion in model container [2020-06-21 23:40:26,254 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:40:26,254 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:40:26" (5/5) ... [2020-06-21 23:40:26,255 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:40:26,282 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:40:26,282 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:40:26,283 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:40:26,283 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:40:26,283 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:40:26,283 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:40:26,283 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:40:26,283 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:40:26,283 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:40:26,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-06-21 23:40:26,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:26,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:26,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:26,316 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:40:26,317 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-21 23:40:26,317 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:40:26,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-06-21 23:40:26,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:26,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:26,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:26,319 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:40:26,319 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-21 23:40:26,324 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 11#L25true [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 7#fiboENTRYtrue [2020-06-21 23:40:26,325 INFO L796 eck$LassoCheckResult]: Loop: 7#fiboENTRYtrue [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 12#L6true [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 6#L8true [59] L8-->L11: Formula: (< v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 10#L11true [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 7#fiboENTRYtrue [2020-06-21 23:40:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:26,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2284, now seen corresponding path program 1 times [2020-06-21 23:40:26,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:26,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:26,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:26,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2319812, now seen corresponding path program 1 times [2020-06-21 23:40:26,407 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:26,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:26,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:26,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:26,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 23:40:26,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-21 23:40:26,456 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-21 23:40:26,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-21 23:40:26,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-21 23:40:26,474 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-06-21 23:40:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:40:26,497 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2020-06-21 23:40:26,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-21 23:40:26,501 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 16 transitions. [2020-06-21 23:40:26,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:26,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 16 transitions. [2020-06-21 23:40:26,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-06-21 23:40:26,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-06-21 23:40:26,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-06-21 23:40:26,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:40:26,514 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-06-21 23:40:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-06-21 23:40:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-06-21 23:40:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-06-21 23:40:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-06-21 23:40:26,546 INFO L729 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-06-21 23:40:26,546 INFO L609 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-06-21 23:40:26,546 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:40:26,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-06-21 23:40:26,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:26,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:26,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:26,548 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:40:26,548 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-21 23:40:26,548 INFO L794 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 32#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 39#fiboENTRY [2020-06-21 23:40:26,549 INFO L796 eck$LassoCheckResult]: Loop: 39#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 40#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 38#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 34#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 39#fiboENTRY [2020-06-21 23:40:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2284, now seen corresponding path program 2 times [2020-06-21 23:40:26,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:26,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:26,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:26,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2319843, now seen corresponding path program 1 times [2020-06-21 23:40:26,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:26,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:26,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:40:26,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:26,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2110718286, now seen corresponding path program 1 times [2020-06-21 23:40:26,564 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:26,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:26,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:26,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:26,638 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:26,639 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:26,639 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:26,639 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:26,639 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:40:26,640 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:26,640 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:26,640 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:26,640 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:40:26,640 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:26,640 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:26,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,736 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:26,737 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 [2020-06-21 23:40:26,745 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:26,745 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:26,758 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:26,758 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} 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 [2020-06-21 23:40:26,788 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:26,788 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:26,793 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:26,793 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=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 [2020-06-21 23:40:26,824 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:26,824 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:26,828 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:26,828 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret0=0} Honda state: {fibo_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-06-21 23:40:26,855 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:26,856 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:26,860 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:26,860 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret1=0} Honda state: {fibo_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-06-21 23:40:26,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:26,888 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2020-06-21 23:40:26,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:40:26,920 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:26,950 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:40:26,953 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:26,953 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:26,953 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:26,953 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:26,953 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:40:26,953 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:40:26,953 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:26,954 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:26,954 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:40:26,954 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:26,954 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:26,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:26,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,007 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:27,013 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:40:27,015 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 [2020-06-21 23:40:27,016 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,016 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,017 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,017 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,017 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,019 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,019 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,023 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:27,023 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 [2020-06-21 23:40:27,024 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,024 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,024 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,024 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,024 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,025 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,025 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,030 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:27,030 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 [2020-06-21 23:40:27,031 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,031 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,031 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,031 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,032 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,032 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,032 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,034 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:27,034 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 [2020-06-21 23:40:27,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,035 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,035 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,035 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,035 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,036 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,036 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,037 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:27,037 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 [2020-06-21 23:40:27,038 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,038 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,038 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,038 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,038 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,039 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,039 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,046 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:40:27,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:40:27,050 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:40:27,052 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:40:27,053 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:40:27,053 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:40:27,053 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-06-21 23:40:27,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:40:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:27,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:40:27,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:27,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-21 23:40:27,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:27,172 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:40:27,175 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 3 loop predicates [2020-06-21 23:40:27,176 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-06-21 23:40:27,277 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 44 states and 57 transitions. Complement of second has 16 states. [2020-06-21 23:40:27,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-06-21 23:40:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-21 23:40:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2020-06-21 23:40:27,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 4 letters. [2020-06-21 23:40:27,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 6 letters. Loop has 4 letters. [2020-06-21 23:40:27,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 8 letters. [2020-06-21 23:40:27,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 57 transitions. [2020-06-21 23:40:27,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:27,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 26 states and 36 transitions. [2020-06-21 23:40:27,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-06-21 23:40:27,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-06-21 23:40:27,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2020-06-21 23:40:27,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:27,298 INFO L706 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-06-21 23:40:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2020-06-21 23:40:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-06-21 23:40:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-06-21 23:40:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-06-21 23:40:27,302 INFO L729 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-06-21 23:40:27,302 INFO L609 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-06-21 23:40:27,302 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:40:27,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 31 transitions. [2020-06-21 23:40:27,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:40:27,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:27,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:27,305 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-21 23:40:27,305 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-21 23:40:27,306 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 147#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 151#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 152#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 163#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 142#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 153#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 155#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 148#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 141#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 144#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 159#fiboENTRY [2020-06-21 23:40:27,306 INFO L796 eck$LassoCheckResult]: Loop: 159#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 162#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 161#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 157#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 159#fiboENTRY [2020-06-21 23:40:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:27,307 INFO L82 PathProgramCache]: Analyzing trace with hash 135274491, now seen corresponding path program 1 times [2020-06-21 23:40:27,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:27,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:27,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:27,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-06-21 23:40:27,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 23:40:27,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-06-21 23:40:27,350 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-21 23:40:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2319843, now seen corresponding path program 2 times [2020-06-21 23:40:27,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:27,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:27,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:27,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:27,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:27,420 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:27,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:27,421 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:27,421 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:27,421 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:40:27,421 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:27,421 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:27,421 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:27,421 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:40:27,421 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:27,422 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:27,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,464 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:27,464 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2020-06-21 23:40:27,467 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:27,467 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:27,471 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:27,471 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=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 [2020-06-21 23:40:27,498 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:27,498 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 [2020-06-21 23:40:27,527 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:40:27,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:27,558 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:40:27,560 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:27,560 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:27,560 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:27,560 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:27,560 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:40:27,560 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:40:27,561 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:27,561 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:27,561 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:40:27,561 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:27,561 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:27,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:27,615 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:27,616 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:40:27,616 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 [2020-06-21 23:40:27,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,617 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,617 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,617 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,618 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,618 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,618 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,620 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:27,621 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 [2020-06-21 23:40:27,621 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:27,621 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:27,621 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:27,621 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:27,622 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:27,622 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:27,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:27,627 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:40:27,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:40:27,631 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:40:27,631 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:40:27,631 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:40:27,632 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:40:27,632 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-06-21 23:40:27,632 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:40:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:27,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2020-06-21 23:40:27,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:27,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-21 23:40:27,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:27,784 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:40:27,784 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-06-21 23:40:27,784 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 23 states and 31 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-06-21 23:40:27,934 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 23 states and 31 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 57 states and 80 transitions. Complement of second has 17 states. [2020-06-21 23:40:27,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-06-21 23:40:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-21 23:40:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-06-21 23:40:27,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 11 letters. Loop has 4 letters. [2020-06-21 23:40:27,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 15 letters. Loop has 4 letters. [2020-06-21 23:40:27,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 11 letters. Loop has 8 letters. [2020-06-21 23:40:27,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:27,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 80 transitions. [2020-06-21 23:40:27,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-06-21 23:40:27,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 42 states and 61 transitions. [2020-06-21 23:40:27,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2020-06-21 23:40:27,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-06-21 23:40:27,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 61 transitions. [2020-06-21 23:40:27,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:27,946 INFO L706 BuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2020-06-21 23:40:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 61 transitions. [2020-06-21 23:40:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-06-21 23:40:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-06-21 23:40:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-06-21 23:40:27,952 INFO L729 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-06-21 23:40:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-21 23:40:27,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-21 23:40:27,953 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 5 states. [2020-06-21 23:40:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:40:28,024 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-06-21 23:40:28,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-06-21 23:40:28,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 46 transitions. [2020-06-21 23:40:28,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-21 23:40:28,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 34 states and 42 transitions. [2020-06-21 23:40:28,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-06-21 23:40:28,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-06-21 23:40:28,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-06-21 23:40:28,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:28,030 INFO L706 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-06-21 23:40:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-06-21 23:40:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-06-21 23:40:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-06-21 23:40:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-06-21 23:40:28,035 INFO L729 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-06-21 23:40:28,035 INFO L609 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-06-21 23:40:28,035 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 23:40:28,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 40 transitions. [2020-06-21 23:40:28,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-21 23:40:28,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:28,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:28,037 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-21 23:40:28,037 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-06-21 23:40:28,038 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 390#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 405#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 411#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 409#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 403#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 408#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 414#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 415#L8 [43] L8-->fiboFINAL: Formula: (and (= v_fibo_~n_4 1) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 410#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 407#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 392#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 396#fiboENTRY [2020-06-21 23:40:28,038 INFO L796 eck$LassoCheckResult]: Loop: 396#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 397#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 395#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 387#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 399#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 400#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 417#L8 [43] L8-->fiboFINAL: Formula: (and (= v_fibo_~n_4 1) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 416#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 386#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 388#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 396#fiboENTRY [2020-06-21 23:40:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:28,038 INFO L82 PathProgramCache]: Analyzing trace with hash -85739695, now seen corresponding path program 1 times [2020-06-21 23:40:28,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:28,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:28,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:28,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:40:28,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:28,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-21 23:40:28,084 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-21 23:40:28,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:28,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-21 23:40:28,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:28,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-21 23:40:28,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-06-21 23:40:28,148 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-21 23:40:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:28,148 INFO L82 PathProgramCache]: Analyzing trace with hash 660445222, now seen corresponding path program 1 times [2020-06-21 23:40:28,148 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:28,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:28,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:28,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:28,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:28,241 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:28,241 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:28,241 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:28,241 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:28,241 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:40:28,242 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:28,242 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:28,242 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:28,242 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-21 23:40:28,242 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:28,242 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:28,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,276 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:28,276 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:28,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:28,279 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:28,311 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:40:28,311 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:28,316 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:40:28,341 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:28,341 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:28,341 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:28,341 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:28,341 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:40:28,341 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:40:28,341 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:28,342 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:28,342 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-21 23:40:28,342 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:28,342 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:28,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:28,379 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:28,379 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:40:28,380 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 [2020-06-21 23:40:28,380 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:28,381 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:28,381 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:28,381 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:28,381 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:28,382 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:28,382 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:28,383 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:28,383 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 [2020-06-21 23:40:28,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:28,384 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:28,384 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:28,384 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:28,384 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:28,385 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:28,385 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:28,388 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:40:28,391 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:40:28,392 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:40:28,392 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:40:28,392 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:40:28,392 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:40:28,392 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2020-06-21 23:40:28,393 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:40:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:28,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-06-21 23:40:28,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:28,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-06-21 23:40:28,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:28,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-21 23:40:28,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:28,659 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-06-21 23:40:28,659 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 11 predicates after loop cannibalization [2020-06-21 23:40:28,659 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 11 loop predicates [2020-06-21 23:40:28,659 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 32 states and 40 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-06-21 23:40:30,239 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 32 states and 40 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 7293 states and 11760 transitions. Complement of second has 3018 states. [2020-06-21 23:40:30,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 16 non-accepting loop states 1 accepting loop states [2020-06-21 23:40:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-21 23:40:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 102 transitions. [2020-06-21 23:40:30,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 102 transitions. Stem has 12 letters. Loop has 10 letters. [2020-06-21 23:40:30,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:30,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 102 transitions. Stem has 22 letters. Loop has 10 letters. [2020-06-21 23:40:30,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:30,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 102 transitions. Stem has 12 letters. Loop has 20 letters. [2020-06-21 23:40:30,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:30,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7293 states and 11760 transitions. [2020-06-21 23:40:30,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-21 23:40:30,410 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7293 states to 157 states and 212 transitions. [2020-06-21 23:40:30,410 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2020-06-21 23:40:30,411 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 130 [2020-06-21 23:40:30,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 157 states and 212 transitions. [2020-06-21 23:40:30,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:30,411 INFO L706 BuchiCegarLoop]: Abstraction has 157 states and 212 transitions. [2020-06-21 23:40:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states and 212 transitions. [2020-06-21 23:40:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 99. [2020-06-21 23:40:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-06-21 23:40:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2020-06-21 23:40:30,430 INFO L729 BuchiCegarLoop]: Abstraction has 99 states and 128 transitions. [2020-06-21 23:40:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-06-21 23:40:30,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-06-21 23:40:30,430 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand 7 states. [2020-06-21 23:40:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:40:30,554 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-06-21 23:40:30,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-06-21 23:40:30,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 138 transitions. [2020-06-21 23:40:30,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-21 23:40:30,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 106 states and 138 transitions. [2020-06-21 23:40:30,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2020-06-21 23:40:30,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2020-06-21 23:40:30,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 138 transitions. [2020-06-21 23:40:30,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:30,563 INFO L706 BuchiCegarLoop]: Abstraction has 106 states and 138 transitions. [2020-06-21 23:40:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 138 transitions. [2020-06-21 23:40:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2020-06-21 23:40:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-06-21 23:40:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2020-06-21 23:40:30,573 INFO L729 BuchiCegarLoop]: Abstraction has 98 states and 126 transitions. [2020-06-21 23:40:30,573 INFO L609 BuchiCegarLoop]: Abstraction has 98 states and 126 transitions. [2020-06-21 23:40:30,573 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-21 23:40:30,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 126 transitions. [2020-06-21 23:40:30,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-21 23:40:30,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:40:30,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:40:30,576 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-06-21 23:40:30,576 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-21 23:40:30,577 INFO L794 eck$LassoCheckResult]: Stem: 11134#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 5) InVars {} OutVars{ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~result~0=v_ULTIMATE.start_main_~result~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~result~0] 11135#L25 [52] L25-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_1| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_1|} AuxVars[] AssignedVars[fibo_#in~n]< 11159#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11176#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11173#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11170#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 11171#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11180#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11175#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11169#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 11171#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11180#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11175#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11169#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 11171#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11181#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11185#L8 [43] L8-->fiboFINAL: Formula: (and (= v_fibo_~n_4 1) (= |v_fibo_#res_2| 1)) InVars {fibo_~n=v_fibo_~n_4} OutVars{fibo_~n=v_fibo_~n_4, fibo_#res=|v_fibo_#res_2|} AuxVars[] AssignedVars[fibo_#res] 11184#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 11183#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 11178#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 11179#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11215#L6 [39] L6-->fiboFINAL: Formula: (and (= |v_fibo_#res_1| 0) (< v_fibo_~n_2 1)) InVars {fibo_~n=v_fibo_~n_2} OutVars{fibo_~n=v_fibo_~n_2, fibo_#res=|v_fibo_#res_1|} AuxVars[] AssignedVars[fibo_#res] 11221#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 11216#fiboEXIT >[53] fiboEXIT-->L11-2: AOR: Formula: (= |v_fibo_#t~ret1_4| |v_fibo_#resOutParam_3|) InVars {fibo_#res=|v_fibo_#resOutParam_3|} OutVars{fibo_#t~ret1=|v_fibo_#t~ret1_4|} AuxVars[] AssignedVars[fibo_#t~ret1] LVA: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n] 11174#L11-2 [46] L11-2-->fiboFINAL: Formula: (= |v_fibo_#res_3| (+ |v_fibo_#t~ret0_3| |v_fibo_#t~ret1_3|)) InVars {fibo_#t~ret0=|v_fibo_#t~ret0_3|, fibo_#t~ret1=|v_fibo_#t~ret1_3|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_2|, fibo_#t~ret1=|v_fibo_#t~ret1_2|, fibo_#res=|v_fibo_#res_3|} AuxVars[] AssignedVars[fibo_#t~ret0, fibo_#t~ret1, fibo_#res] 11172#fiboFINAL [42] fiboFINAL-->fiboEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 11168#fiboEXIT >[54] fiboEXIT-->L11-1: AOR: Formula: (= |v_fibo_#t~ret0_4| |v_fibo_#resOutParam_2|) InVars {fibo_#res=|v_fibo_#resOutParam_2|} OutVars{fibo_#t~ret0=|v_fibo_#t~ret0_4|} AuxVars[] AssignedVars[fibo_#t~ret0] LVA: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n] 11137#L11-1 [47] L11-1-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_3| (+ v_fibo_~n_9 (- 2))) InVars {fibo_~n=v_fibo_~n_9} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_3|} AuxVars[] AssignedVars[fibo_#in~n]< 11149#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11150#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11208#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11126#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 11158#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11211#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11212#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11128#L11 [2020-06-21 23:40:30,577 INFO L796 eck$LassoCheckResult]: Loop: 11128#L11 [51] L11-->fiboENTRY: Formula: (= |v_fibo_#in~nInParam_2| (+ v_fibo_~n_8 (- 1))) InVars {fibo_~n=v_fibo_~n_8} OutVars{fibo_#in~n=|v_fibo_#in~nInParam_2|} AuxVars[] AssignedVars[fibo_#in~n]< 11158#fiboENTRY [45] fiboENTRY-->L6: Formula: (= v_fibo_~n_1 |v_fibo_#in~n_1|) InVars {fibo_#in~n=|v_fibo_#in~n_1|} OutVars{fibo_~n=v_fibo_~n_1, fibo_#in~n=|v_fibo_#in~n_1|} AuxVars[] AssignedVars[fibo_~n] 11211#L6 [56] L6-->L8: Formula: (>= v_fibo_~n_3 1) InVars {fibo_~n=v_fibo_~n_3} OutVars{fibo_~n=v_fibo_~n_3} AuxVars[] AssignedVars[] 11212#L8 [60] L8-->L11: Formula: (> v_fibo_~n_5 1) InVars {fibo_~n=v_fibo_~n_5} OutVars{fibo_~n=v_fibo_~n_5} AuxVars[] AssignedVars[] 11128#L11 [2020-06-21 23:40:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:30,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2070963968, now seen corresponding path program 1 times [2020-06-21 23:40:30,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:30,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:30,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:30,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:30,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-06-21 23:40:30,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-21 23:40:30,686 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-21 23:40:30,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:30,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2020-06-21 23:40:30,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-06-21 23:40:30,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-21 23:40:30,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-06-21 23:40:30,837 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-21 23:40:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2487903, now seen corresponding path program 3 times [2020-06-21 23:40:30,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:40:30,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:40:30,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:30,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:40:30,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:40:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:40:30,901 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:30,901 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:30,901 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:30,901 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:30,902 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:40:30,902 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:30,902 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:30,902 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:30,902 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-21 23:40:30,902 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:30,902 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:30,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:30,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:30,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:30,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:30,948 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:30,948 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:30,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:30,953 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:30,957 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:30,958 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:30,988 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:30,988 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:30,992 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:40:30,992 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret0=0} Honda state: {fibo_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:31,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:40:31,023 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:40:31,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:40:31,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:40:40,318 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:40:40,322 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:40:40,322 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:40:40,322 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:40:40,322 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:40:40,322 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:40:40,322 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:40:40,323 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:40:40,323 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:40:40,323 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-21 23:40:40,323 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:40:40,323 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:40:40,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:40,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:40,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:40,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:40:40,361 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:40:40,362 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:40:40,362 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 [2020-06-21 23:40:40,363 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:40,363 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:40,363 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:40,363 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:40,363 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:40,364 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:40,364 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:40,365 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:40,365 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 [2020-06-21 23:40:40,366 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:40,366 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:40,366 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:40,366 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:40,366 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:40,366 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:40,367 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:40,367 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:40,368 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 [2020-06-21 23:40:40,368 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:40,368 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:40,368 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:40,368 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:40,369 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:40,369 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:40,369 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:40,370 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:40:40,370 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 [2020-06-21 23:40:40,370 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:40:40,371 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:40:40,371 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:40:40,371 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:40:40,371 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:40:40,372 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:40:40,372 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:40:40,375 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:40:40,379 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:40:40,379 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:40:40,379 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:40:40,380 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:40:40,380 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:40:40,380 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2020-06-21 23:40:40,380 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:40:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:40:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:40,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2020-06-21 23:40:40,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:40,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-21 23:40:40,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:40:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:40,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-21 23:40:40,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:40:40,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-21 23:40:40,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:40:40,687 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 7 predicates after loop cannibalization [2020-06-21 23:40:40,687 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 7 loop predicates [2020-06-21 23:40:40,687 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 98 states and 126 transitions. cyclomatic complexity: 31 Second operand 6 states. [2020-06-21 23:40:41,034 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 98 states and 126 transitions. cyclomatic complexity: 31. Second operand 6 states. Result 1347 states and 1748 transitions. Complement of second has 428 states. [2020-06-21 23:40:41,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 8 non-accepting loop states 2 accepting loop states [2020-06-21 23:40:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-21 23:40:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2020-06-21 23:40:41,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 35 letters. Loop has 4 letters. [2020-06-21 23:40:41,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:41,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 39 letters. Loop has 4 letters. [2020-06-21 23:40:41,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:41,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 35 letters. Loop has 8 letters. [2020-06-21 23:40:41,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:40:41,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1347 states and 1748 transitions. [2020-06-21 23:40:41,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2020-06-21 23:40:41,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1347 states to 264 states and 376 transitions. [2020-06-21 23:40:41,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 108 [2020-06-21 23:40:41,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 161 [2020-06-21 23:40:41,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 264 states and 376 transitions. [2020-06-21 23:40:41,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:40:41,070 INFO L706 BuchiCegarLoop]: Abstraction has 264 states and 376 transitions. [2020-06-21 23:40:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states and 376 transitions. [2020-06-21 23:40:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 229. [2020-06-21 23:40:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-06-21 23:40:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 302 transitions. [2020-06-21 23:40:41,090 INFO L729 BuchiCegarLoop]: Abstraction has 229 states and 302 transitions. [2020-06-21 23:40:41,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-06-21 23:40:41,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-06-21 23:40:41,091 INFO L87 Difference]: Start difference. First operand 229 states and 302 transitions. Second operand 17 states. [2020-06-21 23:40:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:40:41,519 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2020-06-21 23:40:41,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-06-21 23:40:41,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 221 transitions. [2020-06-21 23:40:41,526 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:40:41,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 0 states and 0 transitions. [2020-06-21 23:40:41,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:40:41,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:40:41,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:40:41,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:40:41,526 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:40:41,527 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:40:41,527 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:40:41,527 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-21 23:40:41,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:40:41,527 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:40:41,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:40:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:40:41 BasicIcfg [2020-06-21 23:40:41,534 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:40:41,535 INFO L168 Benchmark]: Toolchain (without parser) took 16073.02 ms. Allocated memory was 514.9 MB in the beginning and 731.4 MB in the end (delta: 216.5 MB). Free memory was 436.7 MB in the beginning and 640.1 MB in the end (delta: -203.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,537 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 456.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:40:41,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.29 ms. Allocated memory was 514.9 MB in the beginning and 539.0 MB in the end (delta: 24.1 MB). Free memory was 436.1 MB in the beginning and 510.5 MB in the end (delta: -74.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.91 ms. Allocated memory is still 539.0 MB. Free memory was 510.5 MB in the beginning and 508.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,538 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 539.0 MB. Free memory was 508.9 MB in the beginning and 507.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,539 INFO L168 Benchmark]: RCFGBuilder took 202.87 ms. Allocated memory is still 539.0 MB. Free memory was 507.4 MB in the beginning and 496.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,540 INFO L168 Benchmark]: BlockEncodingV2 took 75.43 ms. Allocated memory is still 539.0 MB. Free memory was 495.6 MB in the beginning and 490.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,540 INFO L168 Benchmark]: TraceAbstraction took 160.80 ms. Allocated memory is still 539.0 MB. Free memory was 490.0 MB in the beginning and 480.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,541 INFO L168 Benchmark]: BuchiAutomizer took 15287.94 ms. Allocated memory was 539.0 MB in the beginning and 731.4 MB in the end (delta: 192.4 MB). Free memory was 480.0 MB in the beginning and 640.1 MB in the end (delta: -160.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:40:41,545 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 21 edges - StatisticsResult: Encoded RCFG 10 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 456.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 290.29 ms. Allocated memory was 514.9 MB in the beginning and 539.0 MB in the end (delta: 24.1 MB). Free memory was 436.1 MB in the beginning and 510.5 MB in the end (delta: -74.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.91 ms. Allocated memory is still 539.0 MB. Free memory was 510.5 MB in the beginning and 508.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 539.0 MB. Free memory was 508.9 MB in the beginning and 507.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. * RCFGBuilder took 202.87 ms. Allocated memory is still 539.0 MB. Free memory was 507.4 MB in the beginning and 496.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.43 ms. Allocated memory is still 539.0 MB. Free memory was 495.6 MB in the beginning and 490.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 50.3 GB. * TraceAbstraction took 160.80 ms. Allocated memory is still 539.0 MB. Free memory was 490.0 MB in the beginning and 480.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 15287.94 ms. Allocated memory was 539.0 MB in the beginning and 731.4 MB in the end (delta: 192.4 MB). Free memory was 480.0 MB in the beginning and 640.1 MB in the end (delta: -160.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 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=10occurred 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, 4 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 4 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. One nondeterministic module has affine ranking function \old(n) and consists of 20 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. 4 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.2s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 11.1s. Construction of modules took 0.6s. Büchi inclusion checks took 3.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 98 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/3 HoareTripleCheckerStatistics: 120 SDtfs, 292 SDslu, 235 SDs, 0 SdLazy, 649 SolverSat, 244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf91 smp100 dnf100 smp100 tf112 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 9.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:40:41.774 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check