/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:43:07,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:43:07,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:43:07,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:43:07,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:43:07,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:43:07,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:43:07,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:43:07,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:43:07,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:43:07,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:43:07,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:43:07,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:43:07,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:43:07,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:43:07,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:43:07,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:43:07,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:43:07,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:43:07,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:43:07,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:43:07,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:43:07,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:43:07,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:43:07,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:43:07,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:43:07,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:43:07,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:43:07,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:43:07,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:43:07,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:43:07,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:43:07,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:43:07,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:43:07,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:43:07,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:43:07,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:43:07,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:43:07,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:43:07,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:43:07,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:43:07,751 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:43:07,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:43:07,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:43:07,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:43:07,767 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:43:07,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:43:07,767 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:43:07,767 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:43:07,768 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:43:07,768 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:43:07,768 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:43:07,768 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:43:07,768 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:43:07,768 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:43:07,769 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:43:07,769 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:07,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:43:07,769 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:43:07,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:43:07,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:43:07,770 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:43:07,770 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:43:07,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:43:07,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:43:07,770 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:43:07,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:43:07,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:43:07,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:43:07,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:43:07,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:43:07,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:43:07,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:43:07,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:43:07,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:43:07,962 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:43:07,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:43:08,027 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AWAkOQ/tmp/dd23035583ef4ec2b55661f8b8d02781/FLAG3484412e7 [2020-07-01 12:43:08,369 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:43:08,370 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:43:08,377 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AWAkOQ/tmp/dd23035583ef4ec2b55661f8b8d02781/FLAG3484412e7 [2020-07-01 12:43:08,787 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_AWAkOQ/tmp/dd23035583ef4ec2b55661f8b8d02781 [2020-07-01 12:43:08,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:43:08,800 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:43:08,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:43:08,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:43:08,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:43:08,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:43:08" (1/1) ... [2020-07-01 12:43:08,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af3d906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:08, skipping insertion in model container [2020-07-01 12:43:08,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:43:08" (1/1) ... [2020-07-01 12:43:08,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:43:08,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:43:09,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:43:09,060 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:43:09,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:43:09,090 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:43:09,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09 WrapperNode [2020-07-01 12:43:09,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:43:09,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:43:09,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:43:09,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:43:09,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:43:09,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:43:09,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:43:09,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:43:09,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:43:09,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:43:09,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:43:09,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:43:09,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:43:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:43:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:43:09,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:43:09,357 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:43:09,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:43:09 BoogieIcfgContainer [2020-07-01 12:43:09,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:43:09,361 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:43:09,361 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:43:09,363 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:43:09,364 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:43:09" (1/1) ... [2020-07-01 12:43:09,376 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 12:43:09,378 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:43:09,379 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:43:09,379 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:43:09,380 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:43:09,381 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:43:09,382 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:43:09,383 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:43:09,397 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:43:09,412 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:43:09,416 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:43:09,418 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:43:09,432 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:43:09,434 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:43:09,435 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:43:09,436 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:43:09,436 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:43:09,436 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:43:09,436 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 12:43:09,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:43:09 BasicIcfg [2020-07-01 12:43:09,437 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:43:09,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:43:09,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:43:09,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:43:09,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:43:08" (1/4) ... [2020-07-01 12:43:09,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354d0dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (2/4) ... [2020-07-01 12:43:09,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354d0dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:43:09" (3/4) ... [2020-07-01 12:43:09,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354d0dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:43:09" (4/4) ... [2020-07-01 12:43:09,446 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:43:09,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:43:09,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:43:09,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:43:09,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:43:09,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:43:09,501 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:43:09,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:43:09,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:43:09,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:43:09,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:43:09,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:43:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 12:43:09,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:43:09,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 12:43:09,575 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-01 12:43:09,576 INFO L271 CegarLoopResult]: At program point L17-2(lines 16 22) the Hoare annotation is: true [2020-07-01 12:43:09,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:43:09,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:43:09 BasicIcfg [2020-07-01 12:43:09,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:43:09,585 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:43:09,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:43:09,588 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:43:09,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:43:09,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:43:08" (1/5) ... [2020-07-01 12:43:09,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c94c69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:43:09,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:43:09" (2/5) ... [2020-07-01 12:43:09,591 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c94c69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,591 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:43:09,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:43:09" (3/5) ... [2020-07-01 12:43:09,591 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c94c69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:43:09,592 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:43:09" (4/5) ... [2020-07-01 12:43:09,592 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c94c69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:43:09, skipping insertion in model container [2020-07-01 12:43:09,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:43:09,592 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:43:09" (5/5) ... [2020-07-01 12:43:09,594 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:43:09,622 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:43:09,623 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:43:09,623 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:43:09,623 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:43:09,623 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:43:09,623 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:43:09,623 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:43:09,624 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:43:09,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:43:09,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:09,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:43:09,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:43:09,651 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:43:09,651 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:43:09,651 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:43:09,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:43:09,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:09,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:43:09,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:43:09,653 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:43:09,653 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:43:09,658 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 12:43:09,658 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [35] L17-2-->L17: Formula: (> 0 v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 5#L17true [34] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_10 (+ v_ULTIMATE.start_main_~x~0_11 1)) (>= 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 12:43:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-07-01 12:43:09,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:09,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591205407] [2020-07-01 12:43:09,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,746 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2080, now seen corresponding path program 1 times [2020-07-01 12:43:09,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:09,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246260142] [2020-07-01 12:43:09,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash 56857, now seen corresponding path program 1 times [2020-07-01 12:43:09,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:09,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880212313] [2020-07-01 12:43:09,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:09,775 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:09,825 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:09,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:09,826 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:09,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:09,826 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:43:09,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:09,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:09,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:09,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:43:09,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:09,828 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:09,847 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 12:43:09,857 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 12:43:09,861 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 12:43:09,929 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:09,930 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:09,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:09,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:09,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:43:09,960 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 12:43:09,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:09,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:09,998 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:43:09,998 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:10,031 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:43:10,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:10,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:43:10,106 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:10,107 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:10,107 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:10,107 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:10,107 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:43:10,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:10,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:10,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:10,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:43:10,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:10,108 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:10,110 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 12:43:10,115 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 12:43:10,120 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 12:43:10,192 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:10,198 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:10,203 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 12:43:10,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:10,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:10,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:10,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:10,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:43:10,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:43:10,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:10,253 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 12:43:10,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:10,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:10,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:10,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:10,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:43:10,260 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:43:10,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/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 12:43:10,301 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 12:43:10,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:10,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:43:10,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:10,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:10,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:10,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:43:10,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:43:10,309 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:43:10,313 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:43:10,314 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/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 12:43:10,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:43:10,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:43:10,320 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:43:10,320 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:43:10,355 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:43:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:10,391 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:43:10,392 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:10,402 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:43:10,403 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:10,417 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 12:43:10,442 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:43:10,447 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 12:43:10,448 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 12:43:10,494 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 11 states and 21 transitions. Complement of second has 7 states. [2020-07-01 12:43:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:43:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:43:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-07-01 12:43:10,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:43:10,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:10,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:43:10,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:10,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 12:43:10,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:10,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 21 transitions. [2020-07-01 12:43:10,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:10,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 8 states and 14 transitions. [2020-07-01 12:43:10,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:43:10,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 12:43:10,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 14 transitions. [2020-07-01 12:43:10,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:43:10,516 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-07-01 12:43:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 14 transitions. [2020-07-01 12:43:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 12:43:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 12:43:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 13 transitions. [2020-07-01 12:43:10,544 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 13 transitions. [2020-07-01 12:43:10,545 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 13 transitions. [2020-07-01 12:43:10,545 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:43:10,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 13 transitions. [2020-07-01 12:43:10,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:10,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:43:10,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:43:10,546 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:43:10,546 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:43:10,547 INFO L794 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 51#L17-2 [36] L17-2-->L17: Formula: (< 0 v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 53#L17 [28] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) (< 0 v_ULTIMATE.start_main_~x~0_9)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 56#L17-2 [2020-07-01 12:43:10,547 INFO L796 eck$LassoCheckResult]: Loop: 56#L17-2 [35] L17-2-->L17: Formula: (> 0 v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 57#L17 [34] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_10 (+ v_ULTIMATE.start_main_~x~0_11 1)) (>= 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 56#L17-2 [2020-07-01 12:43:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:10,547 INFO L82 PathProgramCache]: Analyzing trace with hash 56882, now seen corresponding path program 1 times [2020-07-01 12:43:10,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:10,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073727547] [2020-07-01 12:43:10,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:10,556 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2080, now seen corresponding path program 2 times [2020-07-01 12:43:10,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:10,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390453835] [2020-07-01 12:43:10,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:10,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 54664721, now seen corresponding path program 1 times [2020-07-01 12:43:10,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:10,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558438753] [2020-07-01 12:43:10,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:43:10,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558438753] [2020-07-01 12:43:10,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:43:10,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 12:43:10,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848781270] [2020-07-01 12:43:10,624 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:10,625 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:10,625 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:10,625 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:10,625 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:43:10,625 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,625 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:10,625 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:10,626 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:43:10,626 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:10,626 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:10,627 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 12:43:10,631 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 12:43:10,634 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 12:43:10,688 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:10,688 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:10,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:10,702 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:43:10,702 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 12:43:10,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:10,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:10,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:43:10,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:10,777 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:10,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:43:10,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:10,851 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:43:10,854 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:10,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:10,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:10,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:10,855 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:43:10,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:10,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:10,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:10,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:43:10,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:10,855 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:10,857 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 12:43:10,860 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 12:43:10,864 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 12:43:10,910 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:10,910 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:10,917 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 12:43:10,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:10,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:10,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:10,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:10,923 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:43:10,924 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:43:10,930 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/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 12:43:10,964 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 12:43:10,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:10,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:10,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:10,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:10,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:43:10,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:43:10,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/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 12:43:11,011 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 12:43:11,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:11,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:43:11,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:11,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:11,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:11,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:43:11,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:43:11,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:43:11,023 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:43:11,024 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:11,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:43:11,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:43:11,034 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:43:11,034 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:43:11,065 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:43:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:11,088 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:43:11,088 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:11,093 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:43:11,093 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:11,104 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 12:43:11,118 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:43:11,119 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 12:43:11,119 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 13 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 12:43:11,155 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 13 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 16 states and 29 transitions. Complement of second has 11 states. [2020-07-01 12:43:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:43:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:43:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-07-01 12:43:11,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:43:11,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 12:43:11,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 12:43:11,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 29 transitions. [2020-07-01 12:43:11,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:43:11,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 10 states and 18 transitions. [2020-07-01 12:43:11,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:43:11,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 12:43:11,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2020-07-01 12:43:11,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:43:11,164 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 12:43:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2020-07-01 12:43:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 5. [2020-07-01 12:43:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:43:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9 transitions. [2020-07-01 12:43:11,166 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 9 transitions. [2020-07-01 12:43:11,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:43:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:43:11,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:43:11,170 INFO L87 Difference]: Start difference. First operand 5 states and 9 transitions. Second operand 4 states. [2020-07-01 12:43:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:43:11,194 INFO L93 Difference]: Finished difference Result 7 states and 11 transitions. [2020-07-01 12:43:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:43:11,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 11 transitions. [2020-07-01 12:43:11,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:11,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 8 transitions. [2020-07-01 12:43:11,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:43:11,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 12:43:11,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-07-01 12:43:11,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:43:11,197 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 12:43:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-07-01 12:43:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-07-01 12:43:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 12:43:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-07-01 12:43:11,198 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 12:43:11,199 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 12:43:11,199 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:43:11,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-07-01 12:43:11,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:43:11,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:43:11,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:43:11,200 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:43:11,200 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:43:11,200 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L17-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 137#L17-2 [36] L17-2-->L17: Formula: (< 0 v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 133#L17 [2020-07-01 12:43:11,201 INFO L796 eck$LassoCheckResult]: Loop: 133#L17 [28] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1))) (< 0 v_ULTIMATE.start_main_~x~0_9)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 132#L17-2 [36] L17-2-->L17: Formula: (< 0 v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 133#L17 [2020-07-01 12:43:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1834, now seen corresponding path program 1 times [2020-07-01 12:43:11,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:11,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262942644] [2020-07-01 12:43:11,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,207 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:11,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:11,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1865, now seen corresponding path program 1 times [2020-07-01 12:43:11,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:11,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725952340] [2020-07-01 12:43:11,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,216 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:11,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:11,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1763378, now seen corresponding path program 2 times [2020-07-01 12:43:11,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:43:11,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425502953] [2020-07-01 12:43:11,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:43:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:43:11,227 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:43:11,245 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:11,245 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:11,246 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:11,246 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:11,246 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:43:11,246 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:11,246 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:11,246 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:11,246 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:43:11,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:11,247 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:11,248 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 12:43:11,256 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 12:43:11,260 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 12:43:11,304 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:11,304 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:11,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:43:11,307 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:43:11,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:43:11,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:43:11,443 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:43:11,445 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:43:11,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:43:11,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:43:11,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:43:11,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:43:11,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:11,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:43:11,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:43:11,446 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:43:11,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:43:11,447 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:43:11,448 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 12:43:11,456 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 12:43:11,461 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 12:43:11,502 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:43:11,503 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:11,506 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 12:43:11,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:43:11,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:43:11,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:43:11,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:43:11,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:43:11,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:43:11,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:43:11,512 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:43:11,517 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:43:11,517 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:43:11,522 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:43:11,522 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:43:11,522 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:43:11,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:43:11,553 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:43:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:43:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:11,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:43:11,572 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:43:11,580 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:43:11,581 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:43:11,604 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 12:43:11,604 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:43:11,604 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 12:43:11,605 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-07-01 12:43:11,615 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 8 states and 10 transitions. Complement of second has 4 states. [2020-07-01 12:43:11,615 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 12:43:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:43:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-07-01 12:43:11,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:43:11,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 12:43:11,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 12:43:11,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:43:11,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2020-07-01 12:43:11,620 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:43:11,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-07-01 12:43:11,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:43:11,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:43:11,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:43:11,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:43:11,620 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:43:11,621 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:43:11,621 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:43:11,621 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:43:11,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:43:11,621 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:43:11,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:43:11,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:43:11 BasicIcfg [2020-07-01 12:43:11,627 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:43:11,630 INFO L168 Benchmark]: Toolchain (without parser) took 2829.03 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 562.4 MB in the beginning and 390.7 MB in the end (delta: 171.8 MB). Peak memory consumption was 202.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,630 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:43:11,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.95 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 562.4 MB in the beginning and 643.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.95 ms. Allocated memory is still 680.0 MB. Free memory was 643.9 MB in the beginning and 641.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,632 INFO L168 Benchmark]: Boogie Preprocessor took 19.57 ms. Allocated memory is still 680.0 MB. Free memory was 641.8 MB in the beginning and 640.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,633 INFO L168 Benchmark]: RCFGBuilder took 213.56 ms. Allocated memory is still 680.0 MB. Free memory was 640.7 MB in the beginning and 627.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,633 INFO L168 Benchmark]: BlockEncodingV2 took 76.70 ms. Allocated memory is still 680.0 MB. Free memory was 627.1 MB in the beginning and 620.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,634 INFO L168 Benchmark]: TraceAbstraction took 145.93 ms. Allocated memory is still 680.0 MB. Free memory was 620.6 MB in the beginning and 612.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,634 INFO L168 Benchmark]: BuchiAutomizer took 2042.31 ms. Allocated memory is still 680.0 MB. Free memory was 612.0 MB in the beginning and 390.7 MB in the end (delta: 221.3 MB). Peak memory consumption was 221.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:43:11,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 289.95 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 562.4 MB in the beginning and 643.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.95 ms. Allocated memory is still 680.0 MB. Free memory was 643.9 MB in the beginning and 641.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.57 ms. Allocated memory is still 680.0 MB. Free memory was 641.8 MB in the beginning and 640.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 213.56 ms. Allocated memory is still 680.0 MB. Free memory was 640.7 MB in the beginning and 627.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 76.70 ms. Allocated memory is still 680.0 MB. Free memory was 627.1 MB in the beginning and 620.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.93 ms. Allocated memory is still 680.0 MB. Free memory was 620.6 MB in the beginning and 612.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2042.31 ms. Allocated memory is still 680.0 MB. Free memory was 612.0 MB in the beginning and 390.7 MB in the end (delta: 221.3 MB). Peak memory consumption was 221.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s 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 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function -1 * x and consists of 5 locations. One nondeterministic module has affine ranking function -1 * x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 20 SDslu, 0 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:43:05.496 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_AWAkOQ/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:43:12.495 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check