/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:24:37,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:24:37,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:24:37,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:24:37,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:24:37,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:24:37,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:24:37,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:24:37,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:24:37,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:24:37,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:24:37,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:24:37,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:24:37,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:24:37,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:24:37,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:24:37,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:24:37,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:24:37,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:24:37,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:24:37,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:24:37,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:24:37,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:24:37,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:24:37,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:24:37,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:24:37,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:24:37,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:24:37,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:24:37,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:24:37,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:24:37,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:24:37,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:24:37,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:24:37,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:24:37,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:24:37,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:24:37,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:24:37,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:24:37,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:24:37,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:24:37,434 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:24:37,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:24:37,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:24:37,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:24:37,450 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:24:37,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:24:37,450 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:24:37,450 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:24:37,450 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:24:37,451 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:24:37,452 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:37,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:24:37,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:24:37,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:24:37,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:24:37,453 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:24:37,453 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:24:37,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:24:37,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:24:37,453 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:24:37,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:24:37,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:24:37,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:24:37,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:24:37,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:24:37,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:24:37,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:24:37,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:24:37,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:24:37,638 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:24:37,639 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:24:37,697 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_lMmR2Y/tmp/552d7f5d836549af946fa71604df9fec/FLAG02e8bfea2 [2020-07-01 12:24:38,029 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:24:38,030 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:24:38,037 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_lMmR2Y/tmp/552d7f5d836549af946fa71604df9fec/FLAG02e8bfea2 [2020-07-01 12:24:38,434 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_lMmR2Y/tmp/552d7f5d836549af946fa71604df9fec [2020-07-01 12:24:38,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:24:38,447 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:24:38,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:24:38,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:24:38,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:24:38,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adbae0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38, skipping insertion in model container [2020-07-01 12:24:38,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:24:38,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:24:38,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:24:38,715 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:24:38,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:24:38,747 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:24:38,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38 WrapperNode [2020-07-01 12:24:38,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:24:38,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:24:38,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:24:38,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:24:38,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:24:38,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:24:38,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:24:38,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:24:38,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... [2020-07-01 12:24:38,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:24:38,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:24:38,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:24:38,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:24:38,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:24:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:24:38,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:24:39,032 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:24:39,033 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:24:39,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:24:39 BoogieIcfgContainer [2020-07-01 12:24:39,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:24:39,037 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:24:39,037 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:24:39,040 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:24:39,040 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:24:39" (1/1) ... [2020-07-01 12:24:39,053 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 12 edges [2020-07-01 12:24:39,055 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:24:39,055 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:24:39,056 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:24:39,056 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:24:39,058 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:24:39,059 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:24:39,059 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:24:39,075 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:24:39,093 INFO L200 BlockEncoder]: SBE split 4 edges [2020-07-01 12:24:39,097 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:24:39,099 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:24:39,107 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 12:24:39,109 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:24:39,110 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:24:39,111 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:24:39,111 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:24:39,111 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:24:39,111 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 11 edges [2020-07-01 12:24:39,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:24:39 BasicIcfg [2020-07-01 12:24:39,112 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:24:39,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:24:39,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:24:39,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:24:39,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:24:38" (1/4) ... [2020-07-01 12:24:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2b6fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (2/4) ... [2020-07-01 12:24:39,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2b6fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:24:39" (3/4) ... [2020-07-01 12:24:39,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2b6fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:24:39" (4/4) ... [2020-07-01 12:24:39,121 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:24:39,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:24:39,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:24:39,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:24:39,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:24:39,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:24:39,176 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:24:39,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:24:39,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:24:39,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:24:39,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:24:39,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:24:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 12:24:39,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:24:39,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 12:24:39,252 INFO L268 CegarLoopResult]: For program point L16(lines 16 21) no Hoare annotation was computed. [2020-07-01 12:24:39,252 INFO L268 CegarLoopResult]: For program point L15(lines 15 29) no Hoare annotation was computed. [2020-07-01 12:24:39,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:24:39,253 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-07-01 12:24:39,253 INFO L271 CegarLoopResult]: At program point L23-2(lines 14 30) the Hoare annotation is: true [2020-07-01 12:24:39,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:24:39 BasicIcfg [2020-07-01 12:24:39,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:24:39,263 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:24:39,263 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:24:39,266 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:24:39,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:24:39,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:24:38" (1/5) ... [2020-07-01 12:24:39,268 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb9eb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,268 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:24:39,268 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:24:38" (2/5) ... [2020-07-01 12:24:39,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb9eb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:24:39,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:24:39" (3/5) ... [2020-07-01 12:24:39,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb9eb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:24:39,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:24:39" (4/5) ... [2020-07-01 12:24:39,270 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb9eb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:24:39, skipping insertion in model container [2020-07-01 12:24:39,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:24:39,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:24:39" (5/5) ... [2020-07-01 12:24:39,272 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:24:39,301 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:24:39,301 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:24:39,301 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:24:39,301 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:24:39,301 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:24:39,301 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:24:39,302 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:24:39,302 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:24:39,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:24:39,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:24:39,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:39,322 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:39,329 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:24:39,329 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:24:39,329 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:24:39,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:24:39,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:24:39,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:39,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:39,330 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:24:39,330 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:24:39,335 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L23-2true [2020-07-01 12:24:39,336 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 3#L15true [33] L15-->L16: Formula: (< 0 v_ULTIMATE.start_main_~x~0_12) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[] 6#L16true [54] L16-->L23-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_2|) (= v_ULTIMATE.start_main_~x~0_1 (+ v_ULTIMATE.start_main_~x~0_2 (- 1))) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_2|)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L23-2true [2020-07-01 12:24:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:39,342 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-07-01 12:24:39,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:39,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104212793] [2020-07-01 12:24:39,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,419 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash 80840, now seen corresponding path program 1 times [2020-07-01 12:24:39,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:39,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932355844] [2020-07-01 12:24:39,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2106628, now seen corresponding path program 1 times [2020-07-01 12:24:39,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:39,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673414988] [2020-07-01 12:24:39,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:39,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:39,510 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:39,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:39,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:39,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:39,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:24:39,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:39,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:39,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:39,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:24:39,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:39,513 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:39,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:39,623 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:39,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:39,629 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:39,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:24:39,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:39,705 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:24:39,708 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:39,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:39,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:39,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:39,708 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:24:39,708 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:39,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:39,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:39,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:24:39,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:39,709 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:39,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:39,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:39,792 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:39,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:39,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:39,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:39,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:39,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:39,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:39,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:39,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:39,810 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:24:39,819 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:24:39,819 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/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:39,825 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:24:39,825 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:24:39,826 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:24:39,827 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:24:39,861 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:24:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:39,895 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:24:39,896 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:39,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:39,908 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:39,959 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:39,960 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:40,007 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:24:40,012 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:24:40,014 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 3 states. [2020-07-01 12:24:40,093 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 3 states. Result 22 states and 47 transitions. Complement of second has 7 states. [2020-07-01 12:24:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:24:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:24:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-07-01 12:24:40,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:24:40,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:24:40,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:24:40,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 47 transitions. [2020-07-01 12:24:40,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-07-01 12:24:40,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 17 states and 34 transitions. [2020-07-01 12:24:40,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 12:24:40,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-07-01 12:24:40,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 34 transitions. [2020-07-01 12:24:40,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:24:40,116 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 34 transitions. [2020-07-01 12:24:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 34 transitions. [2020-07-01 12:24:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-07-01 12:24:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-01 12:24:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 29 transitions. [2020-07-01 12:24:40,145 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 29 transitions. [2020-07-01 12:24:40,145 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 29 transitions. [2020-07-01 12:24:40,145 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:24:40,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 29 transitions. [2020-07-01 12:24:40,146 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-07-01 12:24:40,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:40,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:40,147 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:24:40,147 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:24:40,148 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 83#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 75#L15 [2020-07-01 12:24:40,148 INFO L796 eck$LassoCheckResult]: Loop: 75#L15 [33] L15-->L16: Formula: (< 0 v_ULTIMATE.start_main_~x~0_12) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[] 76#L16 [40] L16-->L23-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~y~0_5 (+ v_ULTIMATE.start_main_~y~0_6 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 79#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 75#L15 [2020-07-01 12:24:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2191, now seen corresponding path program 1 times [2020-07-01 12:24:40,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936788026] [2020-07-01 12:24:40,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,157 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,157 INFO L82 PathProgramCache]: Analyzing trace with hash 62796, now seen corresponding path program 1 times [2020-07-01 12:24:40,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516177113] [2020-07-01 12:24:40,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,167 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,168 INFO L82 PathProgramCache]: Analyzing trace with hash 65305086, now seen corresponding path program 1 times [2020-07-01 12:24:40,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508083694] [2020-07-01 12:24:40,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,178 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,194 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:40,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:40,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:40,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:40,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:24:40,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:40,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:40,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:24:40,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:40,196 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:40,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:40,244 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:40,253 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:24:40,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:40,382 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:24:40,385 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:40,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:40,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:40,386 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:40,386 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:24:40,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:40,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:40,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:40,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:24:40,386 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:40,386 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:40,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,452 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:40,453 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:40,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:40,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:40,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:40,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:40,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:40,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:40,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:40,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:40,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:24:40,468 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:24:40,468 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/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:40,477 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:24:40,478 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:24:40,478 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:24:40,478 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 12:24:40,509 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:24:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:40,531 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:24:40,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:40,538 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:40,538 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:40,554 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:40,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:40,582 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:24:40,583 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:24:40,583 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 29 transitions. cyclomatic complexity: 18 Second operand 4 states. [2020-07-01 12:24:40,703 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 29 transitions. cyclomatic complexity: 18. Second operand 4 states. Result 42 states and 80 transitions. Complement of second has 8 states. [2020-07-01 12:24:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 12:24:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:24:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2020-07-01 12:24:40,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 12:24:40,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 12:24:40,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 12:24:40,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:40,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 80 transitions. [2020-07-01 12:24:40,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2020-07-01 12:24:40,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 33 states and 68 transitions. [2020-07-01 12:24:40,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 12:24:40,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-07-01 12:24:40,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 68 transitions. [2020-07-01 12:24:40,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:24:40,716 INFO L688 BuchiCegarLoop]: Abstraction has 33 states and 68 transitions. [2020-07-01 12:24:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 68 transitions. [2020-07-01 12:24:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-07-01 12:24:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-01 12:24:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 56 transitions. [2020-07-01 12:24:40,720 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 56 transitions. [2020-07-01 12:24:40,720 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 56 transitions. [2020-07-01 12:24:40,720 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:24:40,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 56 transitions. [2020-07-01 12:24:40,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2020-07-01 12:24:40,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:40,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:40,722 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:24:40,722 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:24:40,722 INFO L794 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 193#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 203#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 201#L23 [2020-07-01 12:24:40,723 INFO L796 eck$LassoCheckResult]: Loop: 201#L23 [56] L23-->L23-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet4_3|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_3|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_~x~0] 190#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 200#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 201#L23 [2020-07-01 12:24:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,723 INFO L82 PathProgramCache]: Analyzing trace with hash 67999, now seen corresponding path program 1 times [2020-07-01 12:24:40,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012883675] [2020-07-01 12:24:40,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,735 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 85297, now seen corresponding path program 1 times [2020-07-01 12:24:40,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387214855] [2020-07-01 12:24:40,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,744 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:40,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2025813715, now seen corresponding path program 1 times [2020-07-01 12:24:40,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:40,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076377185] [2020-07-01 12:24:40,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:40,757 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:40,793 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:40,793 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:40,793 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:40,793 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:40,794 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:24:40,794 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,794 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:40,794 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:40,794 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:24:40,794 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:40,794 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:40,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:40,845 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:40,845 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:40,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:40,853 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:24:40,854 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:40,887 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:40,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:24:40,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:41,037 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:24:41,040 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:41,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:41,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:41,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:41,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:24:41,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:41,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:41,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:24:41,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:41,042 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:41,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,089 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:41,089 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:41,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:41,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:41,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:41,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:41,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:41,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:41,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:41,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:41,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:41,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:41,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:41,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:41,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:41,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:41,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:41,144 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:24:41,148 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:24:41,148 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/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,153 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:24:41,153 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:24:41,153 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:24:41,154 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:24:41,184 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:24:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:41,215 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:24:41,215 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:41,224 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:41,225 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:41,266 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:41,266 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:41,268 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:24:41,268 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:24:41,269 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 27 states and 56 transitions. cyclomatic complexity: 31 Second operand 4 states. [2020-07-01 12:24:41,461 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 27 states and 56 transitions. cyclomatic complexity: 31. Second operand 4 states. Result 294 states and 616 transitions. Complement of second has 45 states. [2020-07-01 12:24:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 12:24:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:24:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2020-07-01 12:24:41,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 12:24:41,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:41,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 12:24:41,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:41,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 12:24:41,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:41,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 616 transitions. [2020-07-01 12:24:41,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 122 [2020-07-01 12:24:41,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 135 states and 274 transitions. [2020-07-01 12:24:41,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-07-01 12:24:41,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2020-07-01 12:24:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 274 transitions. [2020-07-01 12:24:41,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:24:41,501 INFO L688 BuchiCegarLoop]: Abstraction has 135 states and 274 transitions. [2020-07-01 12:24:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 274 transitions. [2020-07-01 12:24:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 100. [2020-07-01 12:24:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-01 12:24:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 222 transitions. [2020-07-01 12:24:41,511 INFO L711 BuchiCegarLoop]: Abstraction has 100 states and 222 transitions. [2020-07-01 12:24:41,511 INFO L591 BuchiCegarLoop]: Abstraction has 100 states and 222 transitions. [2020-07-01 12:24:41,511 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:24:41,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 222 transitions. [2020-07-01 12:24:41,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 87 [2020-07-01 12:24:41,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:41,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:41,514 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:24:41,514 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:24:41,514 INFO L794 eck$LassoCheckResult]: Stem: 608#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 609#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 630#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 627#L23 [2020-07-01 12:24:41,515 INFO L796 eck$LassoCheckResult]: Loop: 627#L23 [43] L23-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_11 |v_ULTIMATE.start_main_#t~nondet5_3|) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 (- 1))) (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 629#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 667#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 627#L23 [2020-07-01 12:24:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash 67999, now seen corresponding path program 2 times [2020-07-01 12:24:41,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:41,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238605891] [2020-07-01 12:24:41,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,522 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:41,523 INFO L82 PathProgramCache]: Analyzing trace with hash 72804, now seen corresponding path program 1 times [2020-07-01 12:24:41,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:41,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11332051] [2020-07-01 12:24:41,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,531 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2025801222, now seen corresponding path program 1 times [2020-07-01 12:24:41,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:41,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163736479] [2020-07-01 12:24:41,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:41,544 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:41,573 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:41,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:41,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:41,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:41,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:24:41,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:41,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:41,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:41,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:24:41,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:41,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:41,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,624 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:41,625 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:41,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:41,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:41,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:24:41,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:41,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:41,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:41,675 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:24:41,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=-7, ULTIMATE.start_main_~x~0=-7} Honda state: {ULTIMATE.start_main_#t~nondet5=-7, ULTIMATE.start_main_~x~0=-7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:41,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:41,709 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:41,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:24:41,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:41,825 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:24:41,827 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:41,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:41,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:41,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:41,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:24:41,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,828 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:41,828 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:41,828 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:24:41,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:41,828 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:41,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:41,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:41,875 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,879 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:41,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:41,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:41,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:41,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:41,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:41,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:41,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:41,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:41,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:41,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:41,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:41,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:41,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:41,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:41,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:41,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:24:41,929 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:24:41,929 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/sandbox/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:41,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:24:41,932 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:24:41,932 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:24:41,932 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 12:24:41,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:24:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:41,978 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:24:41,979 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:41,983 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:41,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,010 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,011 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,012 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:24:42,013 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:24:42,013 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 100 states and 222 transitions. cyclomatic complexity: 124 Second operand 4 states. [2020-07-01 12:24:42,112 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 100 states and 222 transitions. cyclomatic complexity: 124. Second operand 4 states. Result 392 states and 1004 transitions. Complement of second has 20 states. [2020-07-01 12:24:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 12:24:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:24:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 31 transitions. [2020-07-01 12:24:42,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 12:24:42,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 12:24:42,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 31 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 12:24:42,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 392 states and 1004 transitions. [2020-07-01 12:24:42,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 232 [2020-07-01 12:24:42,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 392 states to 245 states and 543 transitions. [2020-07-01 12:24:42,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2020-07-01 12:24:42,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2020-07-01 12:24:42,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 543 transitions. [2020-07-01 12:24:42,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:24:42,128 INFO L688 BuchiCegarLoop]: Abstraction has 245 states and 543 transitions. [2020-07-01 12:24:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 543 transitions. [2020-07-01 12:24:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 129. [2020-07-01 12:24:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-01 12:24:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 301 transitions. [2020-07-01 12:24:42,140 INFO L711 BuchiCegarLoop]: Abstraction has 129 states and 301 transitions. [2020-07-01 12:24:42,140 INFO L591 BuchiCegarLoop]: Abstraction has 129 states and 301 transitions. [2020-07-01 12:24:42,140 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 12:24:42,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 301 transitions. [2020-07-01 12:24:42,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 116 [2020-07-01 12:24:42,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:42,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:42,142 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:24:42,142 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-07-01 12:24:42,143 INFO L794 eck$LassoCheckResult]: Stem: 1167#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 1168#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1197#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 1196#L23 [2020-07-01 12:24:42,143 INFO L796 eck$LassoCheckResult]: Loop: 1196#L23 [43] L23-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_11 |v_ULTIMATE.start_main_#t~nondet5_3|) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 (- 1))) (= 0 |v_ULTIMATE.start_main_#t~nondet4_5|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_5|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_4|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 1192#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1190#L15 [33] L15-->L16: Formula: (< 0 v_ULTIMATE.start_main_~x~0_12) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[] 1187#L16 [54] L16-->L23-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_2|) (= v_ULTIMATE.start_main_~x~0_1 (+ v_ULTIMATE.start_main_~x~0_2 (- 1))) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_2|)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 1201#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1194#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 1196#L23 [2020-07-01 12:24:42,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:42,143 INFO L82 PathProgramCache]: Analyzing trace with hash 67999, now seen corresponding path program 3 times [2020-07-01 12:24:42,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:42,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832188730] [2020-07-01 12:24:42,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:42,151 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:42,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2127350343, now seen corresponding path program 1 times [2020-07-01 12:24:42,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:42,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57273154] [2020-07-01 12:24:42,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:42,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57273154] [2020-07-01 12:24:42,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:24:42,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 12:24:42,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28069014] [2020-07-01 12:24:42,197 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:24:42,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:24:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:24:42,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:24:42,202 INFO L87 Difference]: Start difference. First operand 129 states and 301 transitions. cyclomatic complexity: 174 Second operand 4 states. [2020-07-01 12:24:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:24:42,236 INFO L93 Difference]: Finished difference Result 77 states and 139 transitions. [2020-07-01 12:24:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:24:42,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 139 transitions. [2020-07-01 12:24:42,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 12:24:42,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 47 states and 91 transitions. [2020-07-01 12:24:42,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-07-01 12:24:42,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 12:24:42,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 91 transitions. [2020-07-01 12:24:42,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:24:42,240 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 91 transitions. [2020-07-01 12:24:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 91 transitions. [2020-07-01 12:24:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2020-07-01 12:24:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-01 12:24:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 67 transitions. [2020-07-01 12:24:42,243 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 67 transitions. [2020-07-01 12:24:42,243 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 67 transitions. [2020-07-01 12:24:42,243 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 12:24:42,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 67 transitions. [2020-07-01 12:24:42,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 12:24:42,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:24:42,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:24:42,245 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 12:24:42,245 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-07-01 12:24:42,245 INFO L794 eck$LassoCheckResult]: Stem: 1377#ULTIMATE.startENTRY [38] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_2 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_3 |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~nondet4=|v_ULTIMATE.start_main_#t~nondet4_1|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_3} 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~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 1378#L23-2 [53] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (> 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1383#L15 [47] L15-->L23: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 1384#L23 [57] L23-->L23-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet4_3|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_3|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_~x~0] 1373#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1369#L15 [2020-07-01 12:24:42,245 INFO L796 eck$LassoCheckResult]: Loop: 1369#L15 [33] L15-->L16: Formula: (< 0 v_ULTIMATE.start_main_~x~0_12) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[] 1370#L16 [54] L16-->L23-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_2|) (= v_ULTIMATE.start_main_~x~0_1 (+ v_ULTIMATE.start_main_~x~0_2 (- 1))) (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet3_2|)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 1375#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1399#L15 [33] L15-->L16: Formula: (< 0 v_ULTIMATE.start_main_~x~0_12) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[] 1372#L16 [40] L16-->L23-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~y~0_5 (+ v_ULTIMATE.start_main_~y~0_6 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0] 1376#L23-2 [52] L23-2-->L15: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (< 0 v_ULTIMATE.start_main_~x~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[] 1369#L15 [2020-07-01 12:24:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash 65348858, now seen corresponding path program 1 times [2020-07-01 12:24:42,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:42,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293301639] [2020-07-01 12:24:42,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:42,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293301639] [2020-07-01 12:24:42,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:24:42,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:24:42,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004960721] [2020-07-01 12:24:42,264 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 12:24:42,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:42,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1883717935, now seen corresponding path program 1 times [2020-07-01 12:24:42,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:24:42,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159895233] [2020-07-01 12:24:42,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:24:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:24:42,274 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:24:42,315 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:42,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:42,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:42,316 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:42,316 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:24:42,316 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:42,316 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:42,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:42,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 12:24:42,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:42,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:42,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,366 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:42,366 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:42,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:42,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:42,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:24:42,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=1} Honda state: {ULTIMATE.start_main_#t~nondet2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:42,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:24:42,408 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:24:42,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:24:42,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:24:42,533 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:24:42,535 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:24:42,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:24:42,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:24:42,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:24:42,535 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:24:42,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:42,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:24:42,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:24:42,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 12:24:42,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:24:42,536 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:24:42,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:24:42,580 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:24:42,580 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:42,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:42,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:42,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:42,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:42,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:42,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:42,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:42,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:42,589 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:42,622 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:24:42,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:24:42,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:24:42,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:24:42,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:24:42,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:24:42,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:24:42,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:24:42,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:24:42,630 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:24:42,631 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/sandbox/solver/bin/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:24:42,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:24:42,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:24:42,633 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:24:42,633 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:24:42,663 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:24:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:24:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,678 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,686 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,687 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:24:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:24:42,761 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:24:42,761 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:24:42,764 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:24:42,764 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:24:42,764 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 31 states and 67 transitions. cyclomatic complexity: 39 Second operand 5 states. [2020-07-01 12:24:42,792 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 31 states and 67 transitions. cyclomatic complexity: 39. Second operand 5 states. Result 51 states and 99 transitions. Complement of second has 8 states. [2020-07-01 12:24:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 12:24:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:24:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2020-07-01 12:24:42,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 6 letters. [2020-07-01 12:24:42,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 6 letters. [2020-07-01 12:24:42,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 12 letters. [2020-07-01 12:24:42,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:24:42,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 99 transitions. [2020-07-01 12:24:42,797 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:24:42,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 0 states and 0 transitions. [2020-07-01 12:24:42,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:24:42,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:24:42,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:24:42,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:24:42,798 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:24:42,798 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:24:42,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:24:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:24:42,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:24:42,799 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-07-01 12:24:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:24:42,799 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:24:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:24:42,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:24:42,800 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:24:42,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:24:42,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:24:42,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:24:42,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:24:42,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:24:42,801 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:24:42,801 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:24:42,801 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:24:42,801 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 12:24:42,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:24:42,801 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:24:42,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:24:42,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:24:42 BasicIcfg [2020-07-01 12:24:42,808 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:24:42,810 INFO L168 Benchmark]: Toolchain (without parser) took 4362.53 ms. Allocated memory was 649.6 MB in the beginning and 752.4 MB in the end (delta: 102.8 MB). Free memory was 557.0 MB in the beginning and 507.8 MB in the end (delta: 49.2 MB). Peak memory consumption was 152.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,810 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:24:42,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.10 ms. Allocated memory was 649.6 MB in the beginning and 682.1 MB in the end (delta: 32.5 MB). Free memory was 557.0 MB in the beginning and 645.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 27.8 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 682.1 MB. Free memory was 645.0 MB in the beginning and 643.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,812 INFO L168 Benchmark]: Boogie Preprocessor took 20.47 ms. Allocated memory is still 682.1 MB. Free memory was 643.9 MB in the beginning and 642.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,813 INFO L168 Benchmark]: RCFGBuilder took 232.22 ms. Allocated memory is still 682.1 MB. Free memory was 642.8 MB in the beginning and 627.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,813 INFO L168 Benchmark]: BlockEncodingV2 took 75.06 ms. Allocated memory is still 682.1 MB. Free memory was 627.2 MB in the beginning and 621.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,814 INFO L168 Benchmark]: TraceAbstraction took 148.82 ms. Allocated memory is still 682.1 MB. Free memory was 620.5 MB in the beginning and 611.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,814 INFO L168 Benchmark]: BuchiAutomizer took 3544.99 ms. Allocated memory was 682.1 MB in the beginning and 752.4 MB in the end (delta: 70.3 MB). Free memory was 611.8 MB in the beginning and 507.8 MB in the end (delta: 104.0 MB). Peak memory consumption was 174.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:24:42,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 12 edges - StatisticsResult: Encoded RCFG 5 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 300.10 ms. Allocated memory was 649.6 MB in the beginning and 682.1 MB in the end (delta: 32.5 MB). Free memory was 557.0 MB in the beginning and 645.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 27.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 682.1 MB. Free memory was 645.0 MB in the beginning and 643.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.47 ms. Allocated memory is still 682.1 MB. Free memory was 643.9 MB in the beginning and 642.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 232.22 ms. Allocated memory is still 682.1 MB. Free memory was 642.8 MB in the beginning and 627.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.06 ms. Allocated memory is still 682.1 MB. Free memory was 627.2 MB in the beginning and 621.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 148.82 ms. Allocated memory is still 682.1 MB. Free memory was 620.5 MB in the beginning and 611.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3544.99 ms. Allocated memory was 682.1 MB in the beginning and 752.4 MB in the end (delta: 70.3 MB). Free memory was 611.8 MB in the beginning and 507.8 MB in the end (delta: 104.0 MB). Peak memory consumption was 174.3 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: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 176 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 129 states and ocurred in iteration 4. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/3 HoareTripleCheckerStatistics: 31 SDtfs, 100 SDslu, 30 SDs, 0 SdLazy, 234 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:24:35.175 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_lMmR2Y/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:24:43.452 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check