/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 13:10:07,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:10:07,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:10:07,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:10:07,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:10:07,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:10:07,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:10:07,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:10:07,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:10:07,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:10:07,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:10:07,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:10:07,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:10:07,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:10:07,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:10:07,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:10:07,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:10:07,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:10:07,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:10:07,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:10:07,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:10:07,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:10:07,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:10:07,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:10:07,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:10:07,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:10:07,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:10:07,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:10:07,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:10:07,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:10:07,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:10:07,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:10:07,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:10:07,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:10:07,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:10:07,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:10:07,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:10:07,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:10:07,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:10:07,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:10:07,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:10:07,808 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 13:10:07,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:10:07,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:10:07,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:10:07,824 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:10:07,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:10:07,824 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:10:07,825 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:10:07,825 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:10:07,825 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:10:07,825 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:10:07,825 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:10:07,825 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:10:07,826 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:10:07,826 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:10:07,826 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:10:07,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:10:07,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:10:07,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:10:07,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:10:07,827 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:10:07,827 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:10:07,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:10:07,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:10:07,828 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:10:07,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:10:07,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:10:07,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:10:07,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:10:07,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:10:07,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:10:08,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:10:08,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:10:08,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:10:08,014 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:10:08,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:10:08,082 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_D32w6n/tmp/cc5171257d624f97b3b6e32f3ee6af9b/FLAG8d8274a49 [2020-07-01 13:10:08,419 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:10:08,420 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:10:08,426 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_D32w6n/tmp/cc5171257d624f97b3b6e32f3ee6af9b/FLAG8d8274a49 [2020-07-01 13:10:08,835 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_D32w6n/tmp/cc5171257d624f97b3b6e32f3ee6af9b [2020-07-01 13:10:08,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:10:08,848 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:10:08,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:10:08,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:10:08,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:10:08,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:10:08" (1/1) ... [2020-07-01 13:10:08,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c47663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:08, skipping insertion in model container [2020-07-01 13:10:08,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:10:08" (1/1) ... [2020-07-01 13:10:08,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:10:08,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:10:09,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:10:09,100 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:10:09,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:10:09,130 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:10:09,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09 WrapperNode [2020-07-01 13:10:09,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:10:09,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:10:09,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:10:09,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:10:09,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:10:09,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:10:09,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:10:09,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:10:09,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:10:09,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:10:09,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:10:09,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:10:09,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (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 13:10:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:10:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:10:09,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:10:09,409 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 13:10:09,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:10:09 BoogieIcfgContainer [2020-07-01 13:10:09,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:10:09,413 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:10:09,413 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:10:09,415 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:10:09,416 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:10:09" (1/1) ... [2020-07-01 13:10:09,429 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-07-01 13:10:09,431 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:10:09,431 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:10:09,432 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:10:09,432 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:10:09,434 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:10:09,435 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:10:09,435 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:10:09,449 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:10:09,457 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 13:10:09,463 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 13:10:09,465 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:10:09,480 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 13:10:09,483 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 13:10:09,484 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:10:09,484 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:10:09,485 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:10:09,485 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:10:09,485 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 13:10:09,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:10:09 BasicIcfg [2020-07-01 13:10:09,486 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:10:09,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:10:09,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:10:09,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:10:09,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:10:08" (1/4) ... [2020-07-01 13:10:09,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504db836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (2/4) ... [2020-07-01 13:10:09,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504db836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:10:09" (3/4) ... [2020-07-01 13:10:09,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504db836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:10:09" (4/4) ... [2020-07-01 13:10:09,496 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:10:09,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:10:09,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:10:09,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:10:09,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:10:09,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:10:09,555 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:10:09,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:10:09,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:10:09,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:10:09,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:10:09,556 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:10:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 13:10:09,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:10:09,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 13:10:09,635 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:10:09,635 INFO L271 CegarLoopResult]: At program point L26-2(lines 26 29) the Hoare annotation is: true [2020-07-01 13:10:09,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:10:09 BasicIcfg [2020-07-01 13:10:09,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:10:09,666 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:10:09,666 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:10:09,670 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:10:09,671 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:10:09,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:10:08" (1/5) ... [2020-07-01 13:10:09,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c82454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:10:09,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:10:09" (2/5) ... [2020-07-01 13:10:09,672 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c82454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:10:09,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:10:09" (3/5) ... [2020-07-01 13:10:09,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c82454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:10:09,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:10:09" (4/5) ... [2020-07-01 13:10:09,674 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c82454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:10:09, skipping insertion in model container [2020-07-01 13:10:09,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:10:09,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:10:09" (5/5) ... [2020-07-01 13:10:09,675 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:10:09,705 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:10:09,705 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:10:09,706 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:10:09,706 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:10:09,706 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:10:09,706 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:10:09,706 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:10:09,706 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:10:09,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 13:10:09,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:10:09,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:10:09,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:10:09,734 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:10:09,734 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:10:09,735 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:10:09,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 13:10:09,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:10:09,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:10:09,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:10:09,736 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:10:09,736 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:10:09,741 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L26-2true [2020-07-01 13:10:09,741 INFO L796 eck$LassoCheckResult]: Loop: 4#L26-2true [22] L26-2-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (= v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (< 0 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L26-2true [2020-07-01 13:10:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:10:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-07-01 13:10:09,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:10:09,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745189627] [2020-07-01 13:10:09,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:10:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,832 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:10:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:10:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-07-01 13:10:09,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:10:09,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172425380] [2020-07-01 13:10:09,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:10:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,849 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:10:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:10:09,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2020-07-01 13:10:09,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:10:09,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762964305] [2020-07-01 13:10:09,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:10:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:10:09,862 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:10:09,910 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:10:09,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:10:09,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:10:09,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:10:09,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:10:09,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:10:09,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:10:09,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:10:09,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:10:09,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:10:09,913 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:10:09,932 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 13:10:09,943 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 13:10:09,947 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 13:10:10,031 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:10:10,032 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 13:10:10,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:10:10,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:10:10,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:10:10,050 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 13:10:10,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:10:10,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:10:10,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:10:10,090 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 13:10:10,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:10:10,123 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 13:10:10,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:10:10,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:10:10,240 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:10:10,243 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:10:10,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:10:10,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:10:10,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:10:10,244 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:10:10,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:10:10,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:10:10,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:10:10,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:10:10,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:10:10,244 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:10:10,247 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 13:10:10,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:10:10,260 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 13:10:10,342 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:10:10,348 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 13:10:10,353 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 13:10:10,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:10:10,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:10:10,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:10:10,372 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 13:10:10,405 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 13:10:10,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:10:10,411 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:10:10,411 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:10:10,417 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 13:10:10,450 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 13:10:10,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:10:10,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:10:10,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:10:10,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:10:10,459 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-07-01 13:10:10,489 INFO L489 LassoAnalysis]: Using template '2-nested'. 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 13:10:10,492 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 13:10:10,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,495 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-07-01 13:10:10,500 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-07-01 13:10:10,500 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-07-01 13:10:10,508 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 13:10:10,542 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 13:10:10,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,545 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-07-01 13:10:10,551 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-07-01 13:10:10,551 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-07-01 13:10:10,563 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 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 13:10:10,597 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 13:10:10,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:10:10,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:10:10,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:10:10,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:10:10,600 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-07-01 13:10:10,603 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-07-01 13:10:10,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:10:10,608 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:10:10,618 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-07-01 13:10:10,618 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:10:10,630 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:10:10,631 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:10:10,631 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:10:10,632 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~y~0 f1 = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 13:10:10,668 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:10:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:10:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:10:10,724 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:10:10,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:10:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:10:10,738 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 13:10:10,738 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:10:10,739 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 13:10:10,768 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 13:10:10,773 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 13:10:10,775 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states. Second operand 2 states. [2020-07-01 13:10:10,793 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states.. Second operand 2 states. Result 3 states and 3 transitions. Complement of second has 2 states. [2020-07-01 13:10:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 13:10:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 13:10:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2020-07-01 13:10:10,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-01 13:10:10,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:10:10,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 13:10:10,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:10:10,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 13:10:10,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:10:10,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2020-07-01 13:10:10,804 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:10:10,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2020-07-01 13:10:10,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:10:10,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:10:10,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:10:10,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:10:10,809 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:10:10,809 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:10:10,809 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:10:10,810 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:10:10,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:10:10,810 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:10:10,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:10:10,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:10:10 BasicIcfg [2020-07-01 13:10:10,816 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:10:10,819 INFO L168 Benchmark]: Toolchain (without parser) took 1969.49 ms. Allocated memory was 649.6 MB in the beginning and 676.9 MB in the end (delta: 27.3 MB). Free memory was 561.8 MB in the beginning and 501.6 MB in the end (delta: 60.1 MB). Peak memory consumption was 87.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,819 INFO L168 Benchmark]: CDTParser took 0.17 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 13:10:10,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.06 ms. Allocated memory was 649.6 MB in the beginning and 676.9 MB in the end (delta: 27.3 MB). Free memory was 561.8 MB in the beginning and 640.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 676.9 MB. Free memory was 640.7 MB in the beginning and 638.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,821 INFO L168 Benchmark]: Boogie Preprocessor took 19.13 ms. Allocated memory is still 676.9 MB. Free memory was 638.5 MB in the beginning and 637.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,822 INFO L168 Benchmark]: RCFGBuilder took 227.61 ms. Allocated memory is still 676.9 MB. Free memory was 637.4 MB in the beginning and 623.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,822 INFO L168 Benchmark]: BlockEncodingV2 took 73.24 ms. Allocated memory is still 676.9 MB. Free memory was 623.9 MB in the beginning and 619.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,823 INFO L168 Benchmark]: TraceAbstraction took 177.82 ms. Allocated memory is still 676.9 MB. Free memory was 618.5 MB in the beginning and 609.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,823 INFO L168 Benchmark]: BuchiAutomizer took 1150.04 ms. Allocated memory is still 676.9 MB. Free memory was 609.9 MB in the beginning and 501.6 MB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:10:10,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 7 edges - StatisticsResult: Encoded RCFG 2 locations, 2 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 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 281.06 ms. Allocated memory was 649.6 MB in the beginning and 676.9 MB in the end (delta: 27.3 MB). Free memory was 561.8 MB in the beginning and 640.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 676.9 MB. Free memory was 640.7 MB in the beginning and 638.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.13 ms. Allocated memory is still 676.9 MB. Free memory was 638.5 MB in the beginning and 637.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 227.61 ms. Allocated memory is still 676.9 MB. Free memory was 637.4 MB in the beginning and 623.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.24 ms. Allocated memory is still 676.9 MB. Free memory was 623.9 MB in the beginning and 619.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 177.82 ms. Allocated memory is still 676.9 MB. Free memory was 618.5 MB in the beginning and 609.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1150.04 ms. Allocated memory is still 676.9 MB. Free memory was 609.9 MB in the beginning and 501.6 MB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 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=2occurred 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 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has 2-nested ranking function (if y > 0 then 1 else 0), (if y > 0 then y else x) and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:10:05.554 ----------------------------------------------- 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_D32w6n/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:10:11.263 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check