/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:30:51,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:30:51,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:30:51,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:30:51,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:30:51,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:30:51,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:30:51,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:30:51,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:30:51,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:30:51,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:30:51,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:30:51,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:30:51,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:30:51,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:30:51,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:30:51,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:30:51,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:30:51,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:30:51,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:30:51,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:30:51,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:30:51,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:30:51,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:30:51,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:30:51,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:30:51,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:30:51,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:30:51,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:30:51,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:30:51,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:30:51,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:30:51,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:30:51,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:30:51,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:30:51,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:30:51,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:30:51,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:30:51,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:30:51,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:30:51,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:30:51,980 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:30:51,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:30:51,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:30:51,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:30:51,996 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:30:51,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:30:51,996 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:30:51,996 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:30:51,996 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:30:51,997 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:30:51,998 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:51,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:30:51,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:30:51,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:30:51,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:30:51,999 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:30:51,999 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:30:51,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:30:51,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:30:51,999 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:30:51,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:30:52,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:30:52,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:30:52,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:30:52,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:30:52,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:30:52,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:30:52,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:30:52,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:30:52,181 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:30:52,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:30:52,250 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_clKlKq/tmp/7762161c736042d8868b6927d4109b95/FLAGac00f454c [2020-07-01 11:30:52,591 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:30:52,592 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:30:52,599 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_clKlKq/tmp/7762161c736042d8868b6927d4109b95/FLAGac00f454c [2020-07-01 11:30:53,002 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_clKlKq/tmp/7762161c736042d8868b6927d4109b95 [2020-07-01 11:30:53,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:30:53,014 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:30:53,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:30:53,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:30:53,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:30:53,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4626a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:30:53,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:30:53,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:30:53,282 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:30:53,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:30:53,313 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:30:53,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53 WrapperNode [2020-07-01 11:30:53,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:30:53,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:30:53,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:30:53,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:30:53,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:30:53,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:30:53,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:30:53,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:30:53,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:30:53,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:30:53,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:30:53,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:30:53,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (1/1) ... No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:30:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:30:53,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:30:53,616 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-01 11:30:53,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:30:53 BoogieIcfgContainer [2020-07-01 11:30:53,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:30:53,621 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:30:53,621 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:30:53,623 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:30:53,624 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:30:53" (1/1) ... [2020-07-01 11:30:53,636 INFO L313 BlockEncoder]: Initial Icfg 11 locations, 16 edges [2020-07-01 11:30:53,637 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:30:53,638 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:30:53,639 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:30:53,639 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:30:53,641 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:30:53,642 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:30:53,642 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:30:53,657 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:30:53,665 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 11:30:53,671 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:30:53,673 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:30:53,689 INFO L100 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2020-07-01 11:30:53,691 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 11:30:53,692 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:30:53,692 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:30:53,692 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:30:53,693 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:30:53,693 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 8 edges [2020-07-01 11:30:53,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:30:53 BasicIcfg [2020-07-01 11:30:53,694 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:30:53,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:30:53,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:30:53,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:30:53,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:30:53" (1/4) ... [2020-07-01 11:30:53,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1590dc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (2/4) ... [2020-07-01 11:30:53,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1590dc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:30:53" (3/4) ... [2020-07-01 11:30:53,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1590dc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:30:53" (4/4) ... [2020-07-01 11:30:53,703 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:30:53,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:30:53,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:30:53,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:30:53,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:30:53,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:30:53,758 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:30:53,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:30:53,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:30:53,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:30:53,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:30:53,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:30:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 11:30:53,778 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:30:53,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 11:30:53,833 INFO L268 CegarLoopResult]: For program point L17-1(lines 12 27) no Hoare annotation was computed. [2020-07-01 11:30:53,833 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-01 11:30:53,833 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:30:53,833 INFO L268 CegarLoopResult]: For program point L15-2(lines 12 27) no Hoare annotation was computed. [2020-07-01 11:30:53,834 INFO L271 CegarLoopResult]: At program point L20-2(lines 20 21) the Hoare annotation is: true [2020-07-01 11:30:53,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:30:53 BasicIcfg [2020-07-01 11:30:53,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:30:53,843 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:30:53,843 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:30:53,846 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:30:53,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:30:53,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:30:53" (1/5) ... [2020-07-01 11:30:53,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c0cbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:30:53,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:30:53" (2/5) ... [2020-07-01 11:30:53,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c0cbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:30:53,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:30:53" (3/5) ... [2020-07-01 11:30:53,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c0cbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:30:53,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:30:53" (4/5) ... [2020-07-01 11:30:53,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c0cbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:30:53, skipping insertion in model container [2020-07-01 11:30:53,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:30:53,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:30:53" (5/5) ... [2020-07-01 11:30:53,852 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:30:53,882 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:30:53,882 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:30:53,882 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:30:53,882 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:30:53,882 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:30:53,882 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:30:53,883 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:30:53,883 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:30:53,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 11:30:53,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:30:53,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:30:53,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:30:53,910 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:30:53,910 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:30:53,910 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:30:53,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 11:30:53,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:30:53,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:30:53,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:30:53,911 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:30:53,911 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:30:53,917 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [48] ULTIMATE.startENTRY-->L15: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_gcd_~x_1 |v_ULTIMATE.start_gcd_#in~x_1|) (= |v_ULTIMATE.start_gcd_#in~x_1| v_ULTIMATE.start_main_~x~0_1) (= |v_ULTIMATE.start_gcd_#in~y_1| v_ULTIMATE.start_main_~y~0_1) (= v_ULTIMATE.start_gcd_~y_1 |v_ULTIMATE.start_gcd_#in~y_1|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_gcd_#res=|v_ULTIMATE.start_gcd_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_gcd_#in~y=|v_ULTIMATE.start_gcd_#in~y_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_gcd_#in~x=|v_ULTIMATE.start_gcd_#in~x_1|, ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_1, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_gcd_~r~0, ULTIMATE.start_gcd_#res, ULTIMATE.start_main_#res, ULTIMATE.start_gcd_#in~y, ULTIMATE.start_main_~y~0, ULTIMATE.start_gcd_#in~x, ULTIMATE.start_gcd_~x, ULTIMATE.start_gcd_~y, ULTIMATE.start_main_~x~0] 3#L15true [60] L15-->L15-2: Formula: (>= v_ULTIMATE.start_gcd_~x_6 0) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} AuxVars[] AssignedVars[] 7#L15-2true [61] L15-2-->L17-1: Formula: (>= v_ULTIMATE.start_gcd_~y_7 0) InVars {ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_7} OutVars{ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_7} AuxVars[] AssignedVars[] 5#L17-1true [2020-07-01 11:30:53,917 INFO L796 eck$LassoCheckResult]: Loop: 5#L17-1true [51] L17-1-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_gcd_~y_9) (= v_ULTIMATE.start_gcd_~r~0_4 v_ULTIMATE.start_gcd_~x_8)) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_4} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~r~0] 6#L20-2true [65] L20-2-->L17-1: Formula: (and (= v_ULTIMATE.start_gcd_~y_13 v_ULTIMATE.start_gcd_~r~0_8) (= v_ULTIMATE.start_gcd_~x_10 v_ULTIMATE.start_gcd_~y_14) (< v_ULTIMATE.start_gcd_~r~0_8 v_ULTIMATE.start_gcd_~y_14)) InVars {ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_14} OutVars{ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_8, ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_10, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_13} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~x, ULTIMATE.start_gcd_~y] 5#L17-1true [2020-07-01 11:30:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash 77840, now seen corresponding path program 1 times [2020-07-01 11:30:53,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:53,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668015643] [2020-07-01 11:30:53,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:54,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:54,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:54,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2607, now seen corresponding path program 1 times [2020-07-01 11:30:54,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:54,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530921690] [2020-07-01 11:30:54,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:54,029 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 74805886, now seen corresponding path program 1 times [2020-07-01 11:30:54,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:54,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326304929] [2020-07-01 11:30:54,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:54,048 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:54,104 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:54,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:54,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:54,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:54,106 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:30:54,106 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:54,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:54,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:54,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:30:54,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:54,107 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:54,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:54,212 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:54,213 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:54,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:54,222 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:54,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:30:54,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:54,805 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:30:54,808 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:54,830 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:54,830 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:54,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:54,830 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:30:54,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:30:54,831 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:54,831 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:54,831 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:30:54,831 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:54,831 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:54,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:54,898 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:54,904 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:54,909 INFO L120 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 [2020-07-01 11:30:54,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:30:54,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:30:54,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:30:54,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:30:54,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:30:54,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:30:54,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:30:54,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:30:54,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:30:54,933 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:54,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:30:54,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:30:54,941 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:30:54,942 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_~y) = 1*ULTIMATE.start_gcd_~y Supporting invariants [] [2020-07-01 11:30:54,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:30:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:55,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:30:55,013 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:55,025 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:30:55,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:30:55,066 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:30:55,071 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:30:55,073 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 3 states. [2020-07-01 11:30:55,104 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 3 states. Result 10 states and 16 transitions. Complement of second has 4 states. [2020-07-01 11:30:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:30:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:30:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-01 11:30:55,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:30:55,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:55,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:30:55,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:55,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:30:55,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:55,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 16 transitions. [2020-07-01 11:30:55,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-01 11:30:55,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 16 transitions. [2020-07-01 11:30:55,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:30:55,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:30:55,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 16 transitions. [2020-07-01 11:30:55,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:30:55,125 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-07-01 11:30:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 16 transitions. [2020-07-01 11:30:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 11:30:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:30:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2020-07-01 11:30:55,154 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-07-01 11:30:55,154 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-07-01 11:30:55,154 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:30:55,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 15 transitions. [2020-07-01 11:30:55,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-01 11:30:55,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:30:55,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:30:55,155 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:30:55,155 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:30:55,156 INFO L794 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L15: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_gcd_~x_1 |v_ULTIMATE.start_gcd_#in~x_1|) (= |v_ULTIMATE.start_gcd_#in~x_1| v_ULTIMATE.start_main_~x~0_1) (= |v_ULTIMATE.start_gcd_#in~y_1| v_ULTIMATE.start_main_~y~0_1) (= v_ULTIMATE.start_gcd_~y_1 |v_ULTIMATE.start_gcd_#in~y_1|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_gcd_#res=|v_ULTIMATE.start_gcd_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_gcd_#in~y=|v_ULTIMATE.start_gcd_#in~y_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_gcd_#in~x=|v_ULTIMATE.start_gcd_#in~x_1|, ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_1, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_gcd_~r~0, ULTIMATE.start_gcd_#res, ULTIMATE.start_main_#res, ULTIMATE.start_gcd_#in~y, ULTIMATE.start_main_~y~0, ULTIMATE.start_gcd_#in~x, ULTIMATE.start_gcd_~x, ULTIMATE.start_gcd_~y, ULTIMATE.start_main_~x~0] 54#L15 [60] L15-->L15-2: Formula: (>= v_ULTIMATE.start_gcd_~x_6 0) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} AuxVars[] AssignedVars[] 55#L15-2 [56] L15-2-->L17-1: Formula: (and (= v_ULTIMATE.start_gcd_~y_5 (- v_ULTIMATE.start_gcd_~y_6)) (< v_ULTIMATE.start_gcd_~y_6 0)) InVars {ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_6} OutVars{ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_5} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~y] 56#L17-1 [2020-07-01 11:30:55,156 INFO L796 eck$LassoCheckResult]: Loop: 56#L17-1 [51] L17-1-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_gcd_~y_9) (= v_ULTIMATE.start_gcd_~r~0_4 v_ULTIMATE.start_gcd_~x_8)) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_4} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~r~0] 57#L20-2 [65] L20-2-->L17-1: Formula: (and (= v_ULTIMATE.start_gcd_~y_13 v_ULTIMATE.start_gcd_~r~0_8) (= v_ULTIMATE.start_gcd_~x_10 v_ULTIMATE.start_gcd_~y_14) (< v_ULTIMATE.start_gcd_~r~0_8 v_ULTIMATE.start_gcd_~y_14)) InVars {ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_14} OutVars{ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_8, ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_10, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_13} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~x, ULTIMATE.start_gcd_~y] 56#L17-1 [2020-07-01 11:30:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 77835, now seen corresponding path program 1 times [2020-07-01 11:30:55,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:55,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312739377] [2020-07-01 11:30:55,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,168 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2607, now seen corresponding path program 2 times [2020-07-01 11:30:55,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:55,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190451858] [2020-07-01 11:30:55,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,178 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash 74801081, now seen corresponding path program 1 times [2020-07-01 11:30:55,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:55,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881237279] [2020-07-01 11:30:55,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:55,192 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:55,215 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:55,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:55,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:55,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:55,216 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:30:55,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:55,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:55,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:55,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:30:55,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:55,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:55,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:55,274 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:55,274 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:55,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:55,279 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:55,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:30:55,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:56,219 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:30:56,223 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:56,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:56,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:56,223 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:56,224 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:30:56,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:30:56,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:56,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:56,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:30:56,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:56,224 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:56,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,273 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:56,273 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:56,277 INFO L120 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 [2020-07-01 11:30:56,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:30:56,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:30:56,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:30:56,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:30:56,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:30:56,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:30:56,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:30:56,287 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:30:56,293 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:30:56,293 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:56,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:30:56,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:30:56,306 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:30:56,306 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_~y) = 1*ULTIMATE.start_gcd_~y Supporting invariants [] [2020-07-01 11:30:56,337 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:30:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:56,360 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:30:56,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:56,367 WARN L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:30:56,368 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:30:56,404 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:30:56,405 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:30:56,405 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states and 15 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-07-01 11:30:56,455 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states and 15 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 12 states and 20 transitions. Complement of second has 5 states. [2020-07-01 11:30:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 11:30:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:30:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-07-01 11:30:56,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:30:56,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:56,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:30:56,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:56,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:30:56,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:56,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 20 transitions. [2020-07-01 11:30:56,461 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-01 11:30:56,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 20 transitions. [2020-07-01 11:30:56,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:30:56,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:30:56,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 20 transitions. [2020-07-01 11:30:56,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:30:56,463 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 20 transitions. [2020-07-01 11:30:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 20 transitions. [2020-07-01 11:30:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-07-01 11:30:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:30:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-07-01 11:30:56,464 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:30:56,464 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:30:56,465 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:30:56,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-07-01 11:30:56,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:30:56,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:30:56,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:30:56,466 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:30:56,466 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:30:56,467 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L15: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_gcd_~x_1 |v_ULTIMATE.start_gcd_#in~x_1|) (= |v_ULTIMATE.start_gcd_#in~x_1| v_ULTIMATE.start_main_~x~0_1) (= |v_ULTIMATE.start_gcd_#in~y_1| v_ULTIMATE.start_main_~y~0_1) (= v_ULTIMATE.start_gcd_~y_1 |v_ULTIMATE.start_gcd_#in~y_1|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_1|, ULTIMATE.start_gcd_#res=|v_ULTIMATE.start_gcd_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_gcd_#in~y=|v_ULTIMATE.start_gcd_#in~y_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_gcd_#in~x=|v_ULTIMATE.start_gcd_#in~x_1|, ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_1, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_gcd_~r~0, ULTIMATE.start_gcd_#res, ULTIMATE.start_main_#res, ULTIMATE.start_gcd_#in~y, ULTIMATE.start_main_~y~0, ULTIMATE.start_gcd_#in~x, ULTIMATE.start_gcd_~x, ULTIMATE.start_gcd_~y, ULTIMATE.start_main_~x~0] 116#L15 [60] L15-->L15-2: Formula: (>= v_ULTIMATE.start_gcd_~x_6 0) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_6} AuxVars[] AssignedVars[] 117#L15-2 [61] L15-2-->L17-1: Formula: (>= v_ULTIMATE.start_gcd_~y_7 0) InVars {ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_7} OutVars{ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_7} AuxVars[] AssignedVars[] 118#L17-1 [51] L17-1-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_gcd_~y_9) (= v_ULTIMATE.start_gcd_~r~0_4 v_ULTIMATE.start_gcd_~x_8)) InVars {ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9} OutVars{ULTIMATE.start_gcd_~x=v_ULTIMATE.start_gcd_~x_8, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_9, ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_4} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~r~0] 120#L20-2 [2020-07-01 11:30:56,467 INFO L796 eck$LassoCheckResult]: Loop: 120#L20-2 [55] L20-2-->L20-2: Formula: (and (= v_ULTIMATE.start_gcd_~r~0_6 (+ (* v_ULTIMATE.start_gcd_~y_11 (- 1)) v_ULTIMATE.start_gcd_~r~0_7)) (<= v_ULTIMATE.start_gcd_~y_11 v_ULTIMATE.start_gcd_~r~0_7)) InVars {ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_7, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_11} OutVars{ULTIMATE.start_gcd_~r~0=v_ULTIMATE.start_gcd_~r~0_6, ULTIMATE.start_gcd_~y=v_ULTIMATE.start_gcd_~y_11} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~r~0] 120#L20-2 [2020-07-01 11:30:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:56,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2413091, now seen corresponding path program 1 times [2020-07-01 11:30:56,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:56,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391345040] [2020-07-01 11:30:56,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,478 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:56,478 INFO L82 PathProgramCache]: Analyzing trace with hash 86, now seen corresponding path program 1 times [2020-07-01 11:30:56,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:56,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809142587] [2020-07-01 11:30:56,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,485 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:56,485 INFO L82 PathProgramCache]: Analyzing trace with hash 74805876, now seen corresponding path program 1 times [2020-07-01 11:30:56,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:30:56,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092189352] [2020-07-01 11:30:56,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:30:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:30:56,499 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:30:56,575 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:56,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:56,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:56,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:56,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:30:56,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:56,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:56,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:56,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:30:56,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:56,577 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:56,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:56,737 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:56,737 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:56,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:56,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:56,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:30:56,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:56,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:56,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:56,795 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:30:56,795 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:56,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:56,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:56,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:30:56,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/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 [2020-07-01 11:30:56,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:30:56,869 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:30:56,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:30:56,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:30:57,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:30:57,218 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:30:57,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:30:57,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:30:57,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:30:57,219 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:30:57,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:30:57,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:30:57,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:30:57,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:30:57,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:30:57,219 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:30:57,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:30:57,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:30:57,356 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:57,361 INFO L120 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 [2020-07-01 11:30:57,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:30:57,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:30:57,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:30:57,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:30:57,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:30:57,374 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:30:57,385 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:30:57,398 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-07-01 11:30:57,399 INFO L444 ModelExtractionUtils]: 17 out of 25 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:30:57,418 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:30:57,423 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 11:30:57,423 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:30:57,423 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_gcd_~r~0, ULTIMATE.start_gcd_~y) = 2*ULTIMATE.start_gcd_~r~0 - 2*ULTIMATE.start_gcd_~y + 1 Supporting invariants [1*ULTIMATE.start_gcd_~y - 1 >= 0] [2020-07-01 11:30:57,456 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 11:30:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:30:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:57,501 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:30:57,502 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:30:57,506 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:30:57,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:30:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:30:57,515 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:30:57,515 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:30:57,515 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 2 states. [2020-07-01 11:30:57,541 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 2 states. Result 8 states and 13 transitions. Complement of second has 2 states. [2020-07-01 11:30:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 11:30:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:30:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 10 transitions. [2020-07-01 11:30:57,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:30:57,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:57,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2020-07-01 11:30:57,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:57,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:30:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:30:57,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 13 transitions. [2020-07-01 11:30:57,545 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:30:57,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-07-01 11:30:57,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:30:57,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:30:57,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:30:57,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:30:57,546 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:30:57,546 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:30:57,546 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:30:57,546 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:30:57,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:30:57,547 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:30:57,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:30:57,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:30:57 BasicIcfg [2020-07-01 11:30:57,553 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:30:57,555 INFO L168 Benchmark]: Toolchain (without parser) took 4540.52 ms. Allocated memory was 649.6 MB in the beginning and 755.0 MB in the end (delta: 105.4 MB). Free memory was 561.7 MB in the beginning and 685.7 MB in the end (delta: -124.0 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:30:57,556 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:30:57,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.27 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 561.7 MB in the beginning and 654.4 MB in the end (delta: -92.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:30:57,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.06 ms. Allocated memory is still 691.0 MB. Free memory was 654.4 MB in the beginning and 651.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:30:57,558 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 ms. Allocated memory is still 691.0 MB. Free memory is still 651.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:30:57,558 INFO L168 Benchmark]: RCFGBuilder took 247.46 ms. Allocated memory is still 691.0 MB. Free memory was 650.3 MB in the beginning and 636.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:30:57,559 INFO L168 Benchmark]: BlockEncodingV2 took 73.32 ms. Allocated memory is still 691.0 MB. Free memory was 636.0 MB in the beginning and 629.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-07-01 11:30:57,560 INFO L168 Benchmark]: TraceAbstraction took 147.06 ms. Allocated memory is still 691.0 MB. Free memory was 628.1 MB in the beginning and 620.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:30:57,560 INFO L168 Benchmark]: BuchiAutomizer took 3710.17 ms. Allocated memory was 691.0 MB in the beginning and 755.0 MB in the end (delta: 64.0 MB). Free memory was 620.1 MB in the beginning and 685.7 MB in the end (delta: -65.6 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:30:57,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 16 edges - StatisticsResult: Encoded RCFG 5 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 299.27 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 561.7 MB in the beginning and 654.4 MB in the end (delta: -92.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.06 ms. Allocated memory is still 691.0 MB. Free memory was 654.4 MB in the beginning and 651.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 21.28 ms. Allocated memory is still 691.0 MB. Free memory is still 651.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * RCFGBuilder took 247.46 ms. Allocated memory is still 691.0 MB. Free memory was 650.3 MB in the beginning and 636.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.32 ms. Allocated memory is still 691.0 MB. Free memory was 636.0 MB in the beginning and 629.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.06 ms. Allocated memory is still 691.0 MB. Free memory was 628.1 MB in the beginning and 620.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3710.17 ms. Allocated memory was 691.0 MB in the beginning and 755.0 MB in the end (delta: 64.0 MB). Free memory was 620.1 MB in the beginning and 685.7 MB in the end (delta: -65.6 MB). There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function 2 * r + -2 * y + 1 and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 24 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf97 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf89 smp100 dnf100 smp100 tf105 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 66ms VariablesStem: 7 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:30:49.616 ----------------------------------------------- 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/sandbox/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/sandbox/tmp/BenchExec_run_clKlKq/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:30:57.999 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check