/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 11:29:51,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:29:51,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:29:51,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:29:51,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:29:51,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:29:51,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:29:51,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:29:51,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:29:51,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:29:51,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:29:51,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:29:51,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:29:51,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:29:51,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:29:51,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:29:51,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:29:51,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:29:51,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:29:51,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:29:51,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:29:51,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:29:51,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:29:51,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:29:51,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:29:51,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:29:51,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:29:51,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:29:51,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:29:51,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:29:51,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:29:51,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:29:51,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:29:51,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:29:51,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:29:51,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:29:51,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:29:51,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:29:51,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:29:51,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:29:51,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:29:51,748 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:29:51,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:29:51,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:29:51,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:29:51,764 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:29:51,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:29:51,765 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:29:51,765 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:29:51,765 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:29:51,765 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:29:51,765 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:29:51,766 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:29:51,766 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:29:51,766 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:29:51,766 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:29:51,766 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:51,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:29:51,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:29:51,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:29:51,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:29:51,767 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:29:51,767 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:29:51,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:29:51,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:29:51,768 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:29:51,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:29:51,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:29:51,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:29:51,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:29:51,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:29:51,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:29:51,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:29:51,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:29:51,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:29:51,956 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:29:51,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:29:52,017 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_F7RfKB/tmp/df71a4208a4c4a428a83ccc0b9e9a235/FLAG070ca1a32 [2020-07-01 11:29:52,375 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:29:52,376 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:29:52,383 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_F7RfKB/tmp/df71a4208a4c4a428a83ccc0b9e9a235/FLAG070ca1a32 [2020-07-01 11:29:52,781 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_F7RfKB/tmp/df71a4208a4c4a428a83ccc0b9e9a235 [2020-07-01 11:29:52,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:29:52,794 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:29:52,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:29:52,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:29:52,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:29:52,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:29:52" (1/1) ... [2020-07-01 11:29:52,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6178ddc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:52, skipping insertion in model container [2020-07-01 11:29:52,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:29:52" (1/1) ... [2020-07-01 11:29:52,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:29:52,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:29:53,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:29:53,049 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:29:53,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:29:53,078 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:29:53,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53 WrapperNode [2020-07-01 11:29:53,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:29:53,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:29:53,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:29:53,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:29:53,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:29:53,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:29:53,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:29:53,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:29:53,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:29:53,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:29:53,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:29:53,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:29:53,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (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 11:29:53,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:29:53,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:29:53,347 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:29:53,348 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:29:53,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:29:53 BoogieIcfgContainer [2020-07-01 11:29:53,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:29:53,352 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:29:53,352 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:29:53,354 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:29:53,355 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:29:53" (1/1) ... [2020-07-01 11:29:53,368 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 11:29:53,369 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:29:53,370 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:29:53,370 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:29:53,371 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:29:53,372 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:29:53,373 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:29:53,373 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:29:53,388 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:29:53,402 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 11:29:53,406 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:29:53,408 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:29:53,418 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:29:53,420 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:29:53,421 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:29:53,422 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:29:53,422 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:29:53,422 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:29:53,422 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 11:29:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:29:53 BasicIcfg [2020-07-01 11:29:53,423 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:29:53,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:29:53,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:29:53,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:29:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:29:52" (1/4) ... [2020-07-01 11:29:53,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2095cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (2/4) ... [2020-07-01 11:29:53,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2095cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:29:53" (3/4) ... [2020-07-01 11:29:53,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2095cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:29:53" (4/4) ... [2020-07-01 11:29:53,431 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:29:53,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:29:53,449 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:29:53,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:29:53,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:29:53,485 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:29:53,486 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:29:53,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:29:53,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:29:53,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:29:53,486 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:29:53,486 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:29:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:29:53,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:29:53,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:29:53,560 INFO L268 CegarLoopResult]: For program point L15(lines 15 20) no Hoare annotation was computed. [2020-07-01 11:29:53,561 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:29:53,561 INFO L271 CegarLoopResult]: At program point L15-2(lines 14 21) the Hoare annotation is: true [2020-07-01 11:29:53,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:29:53 BasicIcfg [2020-07-01 11:29:53,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:29:53,570 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:29:53,570 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:29:53,573 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:29:53,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:29:53,574 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:29:52" (1/5) ... [2020-07-01 11:29:53,575 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594aac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,575 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:29:53,575 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:29:53" (2/5) ... [2020-07-01 11:29:53,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594aac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:29:53,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:29:53" (3/5) ... [2020-07-01 11:29:53,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594aac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:29:53,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:29:53" (4/5) ... [2020-07-01 11:29:53,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@594aac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:29:53, skipping insertion in model container [2020-07-01 11:29:53,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:29:53,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:29:53" (5/5) ... [2020-07-01 11:29:53,579 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:29:53,608 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:29:53,608 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:29:53,608 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:29:53,608 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:29:53,608 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:29:53,609 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:29:53,609 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:29:53,609 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:29:53,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:29:53,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:29:53,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:29:53,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:29:53,638 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:29:53,638 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:29:53,638 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:29:53,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:29:53,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:29:53,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:29:53,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:29:53,640 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:29:53,640 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:29:53,645 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 5#L15-2true [2020-07-01 11:29:53,645 INFO L796 eck$LassoCheckResult]: Loop: 5#L15-2true [31] L15-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 3#L15true [37] L15-->L15-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1))) (= v_ULTIMATE.start_main_~y~0_6 |v_ULTIMATE.start_main_#t~nondet3_3|)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 5#L15-2true [2020-07-01 11:29:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-07-01 11:29:53,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:53,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058587388] [2020-07-01 11:29:53,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,729 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1959, now seen corresponding path program 1 times [2020-07-01 11:29:53,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:53,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804382556] [2020-07-01 11:29:53,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,751 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash 55775, now seen corresponding path program 1 times [2020-07-01 11:29:53,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:53,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857205921] [2020-07-01 11:29:53,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:53,766 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:53,821 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:29:53,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:29:53,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:29:53,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:29:53,822 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:29:53,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:53,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:29:53,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:29:53,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:29:53,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:29:53,823 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:29:53,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:53,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:53,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:53,935 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:29:53,936 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 11:29:53,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:29:53,945 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:29:53,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:29:53,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:29:54,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:29:54,025 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:29:54,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:29:54,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:29:54,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:29:54,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:29:54,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:29:54,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:29:54,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:29:54,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:29:54,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:29:54,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,104 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:29:54,110 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:29:54,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:29:54,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:29:54,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:29:54,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:29:54,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:29:54,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:29:54,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:29:54,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:29:54,138 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:29:54,138 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:29:54,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:29:54,148 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:29:54,149 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 11:29:54,183 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:29:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:29:54,226 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:29:54,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:29:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:29:54,239 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:29:54,240 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:29:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:29:54,279 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:29:54,285 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:29:54,286 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:29:54,320 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 8 states and 12 transitions. Complement of second has 4 states. [2020-07-01 11:29:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:29:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:29:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:29:54,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:29:54,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:29:54,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:29:54,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 12 transitions. [2020-07-01 11:29:54,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:29:54,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 12 transitions. [2020-07-01 11:29:54,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:29:54,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:29:54,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 12 transitions. [2020-07-01 11:29:54,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:29:54,341 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-07-01 11:29:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 12 transitions. [2020-07-01 11:29:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 11:29:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:29:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2020-07-01 11:29:54,370 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-07-01 11:29:54,370 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 11 transitions. [2020-07-01 11:29:54,370 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:29:54,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 11 transitions. [2020-07-01 11:29:54,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:29:54,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:29:54,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:29:54,372 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:29:54,372 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:29:54,372 INFO L794 eck$LassoCheckResult]: Stem: 49#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 50#L15-2 [31] L15-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 44#L15 [2020-07-01 11:29:54,372 INFO L796 eck$LassoCheckResult]: Loop: 44#L15 [25] L15-->L15-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~y~0_7 (+ v_ULTIMATE.start_main_~y~0_8 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 45#L15-2 [31] L15-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 44#L15 [2020-07-01 11:29:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:54,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 1 times [2020-07-01 11:29:54,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:54,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325066626] [2020-07-01 11:29:54,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1767, now seen corresponding path program 1 times [2020-07-01 11:29:54,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:54,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333797652] [2020-07-01 11:29:54,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,391 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1728684, now seen corresponding path program 1 times [2020-07-01 11:29:54,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:29:54,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499264012] [2020-07-01 11:29:54,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:29:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:29:54,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:29:54,421 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:29:54,422 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:29:54,422 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:29:54,422 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:29:54,422 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:29:54,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:54,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:29:54,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:29:54,423 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:29:54,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:29:54,423 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:29:54,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,475 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:29:54,475 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:54,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:29:54,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:29:54,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:29:54,485 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:54,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:29:54,519 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:29:54,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:29:54,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:29:54,636 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:29:54,638 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:29:54,639 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:29:54,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:29:54,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:29:54,639 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:29:54,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:29:54,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:29:54,640 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:29:54,640 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:29:54,640 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:29:54,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:29:54,682 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:29:54,682 INFO L489 LassoAnalysis]: Using template 'affine'. 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 11:29:54,687 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:29:54,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:29:54,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:29:54,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:29:54,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:29:54,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:29:54,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:29:54,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:29:54,693 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 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:29:54,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:29:54,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:29:54,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:29:54,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:29:54,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:29:54,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:29:54,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:29:54,736 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:29:54,740 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:29:54,741 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:29:54,747 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:29:54,748 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:29:54,748 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:29:54,748 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:29:54,779 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:29:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:29:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:29:54,815 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:29:54,815 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:29:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:29:54,830 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:29:54,830 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:29:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:29:54,858 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:29:54,859 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:29:54,859 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 11 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-07-01 11:29:54,893 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 11 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 15 transitions. Complement of second has 4 states. [2020-07-01 11:29:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:29:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:29:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 11:29:54,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 11:29:54,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:29:54,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 11:29:54,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:29:54,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 15 transitions. [2020-07-01 11:29:54,898 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:29:54,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-07-01 11:29:54,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:29:54,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:29:54,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:29:54,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:29:54,899 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:29:54,899 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:29:54,899 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:29:54,900 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:29:54,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:29:54,900 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:29:54,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:29:54,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:29:54 BasicIcfg [2020-07-01 11:29:54,906 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:29:54,909 INFO L168 Benchmark]: Toolchain (without parser) took 2114.10 ms. Allocated memory was 649.6 MB in the beginning and 669.5 MB in the end (delta: 19.9 MB). Free memory was 561.7 MB in the beginning and 470.9 MB in the end (delta: 90.8 MB). Peak memory consumption was 110.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,909 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:29:54,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.99 ms. Allocated memory was 649.6 MB in the beginning and 669.5 MB in the end (delta: 19.9 MB). Free memory was 561.7 MB in the beginning and 632.9 MB in the end (delta: -71.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.81 ms. Allocated memory is still 669.5 MB. Free memory was 632.9 MB in the beginning and 631.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,911 INFO L168 Benchmark]: Boogie Preprocessor took 18.71 ms. Allocated memory is still 669.5 MB. Free memory was 631.5 MB in the beginning and 630.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,912 INFO L168 Benchmark]: RCFGBuilder took 220.06 ms. Allocated memory is still 669.5 MB. Free memory was 630.2 MB in the beginning and 615.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,912 INFO L168 Benchmark]: BlockEncodingV2 took 71.24 ms. Allocated memory is still 669.5 MB. Free memory was 615.5 MB in the beginning and 610.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,913 INFO L168 Benchmark]: TraceAbstraction took 145.21 ms. Allocated memory is still 669.5 MB. Free memory was 610.1 MB in the beginning and 602.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,913 INFO L168 Benchmark]: BuchiAutomizer took 1336.08 ms. Allocated memory is still 669.5 MB. Free memory was 602.1 MB in the beginning and 470.9 MB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:29:54,917 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 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 283.99 ms. Allocated memory was 649.6 MB in the beginning and 669.5 MB in the end (delta: 19.9 MB). Free memory was 561.7 MB in the beginning and 632.9 MB in the end (delta: -71.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.81 ms. Allocated memory is still 669.5 MB. Free memory was 632.9 MB in the beginning and 631.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.71 ms. Allocated memory is still 669.5 MB. Free memory was 631.5 MB in the beginning and 630.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 220.06 ms. Allocated memory is still 669.5 MB. Free memory was 630.2 MB in the beginning and 615.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.24 ms. Allocated memory is still 669.5 MB. Free memory was 615.5 MB in the beginning and 610.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.21 ms. Allocated memory is still 669.5 MB. Free memory was 610.1 MB in the beginning and 602.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1336.08 ms. Allocated memory is still 669.5 MB. Free memory was 602.1 MB in the beginning and 470.9 MB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 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: 14]: 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 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 13 SDslu, 1 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:29:49.419 ----------------------------------------------- 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_F7RfKB/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:29:55.556 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check