/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:16:52,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:16:52,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:16:52,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:16:52,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:16:52,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:16:52,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:16:52,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:16:52,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:16:52,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:16:52,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:16:52,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:16:52,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:16:52,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:16:52,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:16:52,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:16:52,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:16:52,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:16:52,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:16:52,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:16:52,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:16:52,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:16:52,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:16:52,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:16:52,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:16:52,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:16:52,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:16:52,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:16:52,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:16:52,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:16:52,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:16:52,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:16:52,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:16:52,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:16:52,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:16:52,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:16:52,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:16:52,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:16:52,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:16:52,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:16:52,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:16:52,566 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:16:52,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:16:52,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:16:52,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:16:52,581 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:16:52,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:16:52,581 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:16:52,582 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:16:52,582 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:16:52,582 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:16:52,582 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:16:52,582 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:16:52,582 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:16:52,583 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:16:52,583 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:16:52,583 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:52,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:16:52,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:16:52,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:16:52,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:16:52,584 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:16:52,584 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:16:52,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:16:52,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:16:52,585 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:16:52,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:16:52,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:16:52,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:16:52,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:16:52,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:16:52,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:16:52,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:16:52,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:16:52,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:16:52,768 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:16:52,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:16:52,866 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_A2aYEF/tmp/dd33728d0bfe4bd89a6ec88612cff0ef/FLAG7e5a118d3 [2020-07-01 11:16:53,196 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:16:53,196 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:16:53,203 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_A2aYEF/tmp/dd33728d0bfe4bd89a6ec88612cff0ef/FLAG7e5a118d3 [2020-07-01 11:16:53,607 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_A2aYEF/tmp/dd33728d0bfe4bd89a6ec88612cff0ef [2020-07-01 11:16:53,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:16:53,619 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:16:53,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:16:53,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:16:53,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:16:53,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689092e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53, skipping insertion in model container [2020-07-01 11:16:53,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:16:53,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:16:53,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:16:53,888 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:16:53,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:16:53,919 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:16:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53 WrapperNode [2020-07-01 11:16:53,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:16:53,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:16:53,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:16:53,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:16:53,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:16:53,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:16:53,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:16:53,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:16:53,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... [2020-07-01 11:16:53,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:16:53,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:16:53,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:16:53,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:16:53,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:16:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:16:54,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:16:54,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:16:54,207 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:16:54,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:16:54 BoogieIcfgContainer [2020-07-01 11:16:54,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:16:54,211 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:16:54,211 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:16:54,213 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:16:54,214 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:16:54" (1/1) ... [2020-07-01 11:16:54,227 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 11:16:54,229 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:16:54,229 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:16:54,230 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:16:54,230 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:16:54,232 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:16:54,233 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:16:54,233 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:16:54,247 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:16:54,260 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:16:54,264 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:16:54,266 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:16:54,274 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:16:54,276 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 11:16:54,278 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:16:54,278 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:16:54,281 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:16:54,281 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:16:54,281 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:16:54,282 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:16:54,282 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:16:54,282 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:16:54,283 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 11:16:54,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:16:54 BasicIcfg [2020-07-01 11:16:54,283 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:16:54,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:16:54,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:16:54,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:16:54,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:16:53" (1/4) ... [2020-07-01 11:16:54,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de3f05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (2/4) ... [2020-07-01 11:16:54,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de3f05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:16:54" (3/4) ... [2020-07-01 11:16:54,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de3f05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:16:54" (4/4) ... [2020-07-01 11:16:54,292 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:16:54,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:16:54,309 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:16:54,323 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:16:54,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:16:54,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:16:54,346 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:16:54,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:16:54,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:16:54,346 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:16:54,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:16:54,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:16:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:16:54,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:16:54,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:16:54,421 INFO L271 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-07-01 11:16:54,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:16:54,421 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-07-01 11:16:54,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:16:54 BasicIcfg [2020-07-01 11:16:54,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:16:54,430 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:16:54,430 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:16:54,434 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:16:54,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:16:54,435 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:16:53" (1/5) ... [2020-07-01 11:16:54,436 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@248f7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,436 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:16:54,436 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:16:53" (2/5) ... [2020-07-01 11:16:54,436 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@248f7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,436 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:16:54,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:16:54" (3/5) ... [2020-07-01 11:16:54,437 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@248f7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:16:54,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:16:54" (4/5) ... [2020-07-01 11:16:54,438 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@248f7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:16:54, skipping insertion in model container [2020-07-01 11:16:54,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:16:54,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:16:54" (5/5) ... [2020-07-01 11:16:54,439 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:16:54,469 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:16:54,469 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:16:54,469 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:16:54,469 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:16:54,469 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:16:54,470 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:16:54,470 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:16:54,470 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:16:54,473 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:16:54,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:16:54,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:16:54,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:16:54,495 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:16:54,495 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:16:54,495 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:16:54,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:16:54,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:16:54,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:16:54,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:16:54,496 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:16:54,496 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:16:54,501 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [48] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~n~0_6 v_ULTIMATE.start_main_~i~0_11) (< v_ULTIMATE.start_main_~m~0_8 v_ULTIMATE.start_main_~n~0_6) (< 0 v_ULTIMATE.start_main_~m~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_8, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_6, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_4|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~i~0] 4#L18-2true [2020-07-01 11:16:54,502 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-2true [35] L18-2-->L18: Formula: (< 0 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 5#L18true [36] L18-->L18-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_2 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~i~0_2 (+ v_ULTIMATE.start_main_~i~0_1 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_2, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1} OutVars{ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~i~0] 4#L18-2true [2020-07-01 11:16:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:54,508 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 1 times [2020-07-01 11:16:54,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:54,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452743204] [2020-07-01 11:16:54,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:54,597 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:54,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2082, now seen corresponding path program 1 times [2020-07-01 11:16:54,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:54,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814007563] [2020-07-01 11:16:54,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:54,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:54,610 INFO L82 PathProgramCache]: Analyzing trace with hash 77040, now seen corresponding path program 1 times [2020-07-01 11:16:54,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:54,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881741592] [2020-07-01 11:16:54,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:16:54,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881741592] [2020-07-01 11:16:54,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:16:54,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 11:16:54,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663061384] [2020-07-01 11:16:54,704 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:54,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:54,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:54,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:54,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:16:54,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:54,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:54,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:54,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:16:54,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:54,706 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:54,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:54,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:54,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:54,787 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:54,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:16:54,794 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:54,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:16:54,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:16:54,877 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:16:54,879 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:54,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:54,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:54,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:54,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:16:54,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:54,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:54,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:54,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:16:54,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:54,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:54,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:54,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:54,931 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:54,937 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:54,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:54,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:54,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:16:54,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:54,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:54,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:54,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:16:54,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:16:54,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:16:54,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:16:54,962 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:54,969 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:16:54,969 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:16:54,970 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:16:54,971 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:16:55,004 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:16:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:55,039 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:16:55,040 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:55,051 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:16:55,052 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:16:55,100 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:16:55,105 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:16:55,107 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:16:55,161 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 5 states. [2020-07-01 11:16:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 11:16:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:16:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-07-01 11:16:55,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:16:55,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:16:55,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:16:55,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-07-01 11:16:55,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:16:55,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 11:16:55,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:16:55,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:16:55,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-07-01 11:16:55,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:16:55,181 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 11:16:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-07-01 11:16:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-01 11:16:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:16:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 11:16:55,209 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 11:16:55,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:16:55,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:16:55,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:16:55,212 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 3 states. [2020-07-01 11:16:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:16:55,225 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2020-07-01 11:16:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:16:55,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2020-07-01 11:16:55,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:16:55,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 5 states and 6 transitions. [2020-07-01 11:16:55,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:16:55,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:16:55,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2020-07-01 11:16:55,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:16:55,229 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-07-01 11:16:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2020-07-01 11:16:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-07-01 11:16:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:16:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2020-07-01 11:16:55,231 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-07-01 11:16:55,231 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-07-01 11:16:55,231 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:16:55,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2020-07-01 11:16:55,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:16:55,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:16:55,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:16:55,232 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:16:55,232 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:16:55,233 INFO L794 eck$LassoCheckResult]: Stem: 62#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~n~0_6 v_ULTIMATE.start_main_~i~0_11) (< v_ULTIMATE.start_main_~m~0_8 v_ULTIMATE.start_main_~n~0_6) (< 0 v_ULTIMATE.start_main_~m~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_8, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_6, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_4|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~i~0] 63#L18-2 [35] L18-2-->L18: Formula: (< 0 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 66#L18 [43] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 (* v_ULTIMATE.start_main_~m~0_5 (- 1)))) (>= v_ULTIMATE.start_main_~i~0_7 v_ULTIMATE.start_main_~m~0_5)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 64#L18-2 [2020-07-01 11:16:55,233 INFO L796 eck$LassoCheckResult]: Loop: 64#L18-2 [35] L18-2-->L18: Formula: (< 0 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 65#L18 [36] L18-->L18-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_2 v_ULTIMATE.start_main_~m~0_1) (= v_ULTIMATE.start_main_~i~0_2 (+ v_ULTIMATE.start_main_~i~0_1 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_2, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1} OutVars{ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~i~0] 64#L18-2 [2020-07-01 11:16:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,234 INFO L82 PathProgramCache]: Analyzing trace with hash 77047, now seen corresponding path program 1 times [2020-07-01 11:16:55,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498894789] [2020-07-01 11:16:55,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,245 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2082, now seen corresponding path program 2 times [2020-07-01 11:16:55,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100599809] [2020-07-01 11:16:55,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,252 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash 74043288, now seen corresponding path program 1 times [2020-07-01 11:16:55,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176341623] [2020-07-01 11:16:55,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,265 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,279 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:55,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:55,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:55,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:55,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:16:55,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:55,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:55,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:16:55,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:55,281 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:55,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,321 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:55,322 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:16:55,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:16:55,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:16:55,330 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:16:55,384 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:16:55,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:16:55,458 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:16:55,461 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:55,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:55,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:55,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:55,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:16:55,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:55,462 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:55,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:55,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:16:55,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:55,462 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:55,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,496 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:55,497 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:55,500 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:55,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:55,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:16:55,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:55,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:55,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:55,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:16:55,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:16:55,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:16:55,512 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:16:55,513 INFO L444 ModelExtractionUtils]: 1 out of 4 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:55,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:16:55,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:16:55,524 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:16:55,524 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:16:55,554 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:16:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:55,576 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:16:55,576 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:55,582 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:16:55,582 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:16:55,609 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:16:55,609 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:16:55,609 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 3 states. [2020-07-01 11:16:55,627 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 7 states and 9 transitions. Complement of second has 4 states. [2020-07-01 11:16:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:16:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:16:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 11:16:55,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:16:55,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:16:55,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:16:55,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:55,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 9 transitions. [2020-07-01 11:16:55,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:16:55,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 9 transitions. [2020-07-01 11:16:55,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:16:55,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:16:55,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-07-01 11:16:55,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:16:55,632 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-01 11:16:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-07-01 11:16:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-07-01 11:16:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 11:16:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-07-01 11:16:55,634 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 11:16:55,634 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 11:16:55,634 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:16:55,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-07-01 11:16:55,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:16:55,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:16:55,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:16:55,636 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:16:55,636 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:16:55,636 INFO L794 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRY [48] ULTIMATE.startENTRY-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~n~0_6 v_ULTIMATE.start_main_~i~0_11) (< v_ULTIMATE.start_main_~m~0_8 v_ULTIMATE.start_main_~n~0_6) (< 0 v_ULTIMATE.start_main_~m~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_8, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_6, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_4|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~i~0] 111#L18-2 [35] L18-2-->L18: Formula: (< 0 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 112#L18 [2020-07-01 11:16:55,636 INFO L796 eck$LassoCheckResult]: Loop: 112#L18 [43] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 (* v_ULTIMATE.start_main_~m~0_5 (- 1)))) (>= v_ULTIMATE.start_main_~i~0_7 v_ULTIMATE.start_main_~m~0_5)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 115#L18-2 [35] L18-2-->L18: Formula: (< 0 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 112#L18 [2020-07-01 11:16:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2484, now seen corresponding path program 1 times [2020-07-01 11:16:55,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982108263] [2020-07-01 11:16:55,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,645 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2329, now seen corresponding path program 1 times [2020-07-01 11:16:55,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159780356] [2020-07-01 11:16:55,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,653 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:55,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2388492, now seen corresponding path program 2 times [2020-07-01 11:16:55,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:16:55,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828406645] [2020-07-01 11:16:55,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:16:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:16:55,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:16:55,706 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:55,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:55,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:55,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:55,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:16:55,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:55,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:55,708 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:16:55,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:55,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:55,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:55,797 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:55,797 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:16:55,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:16:55,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:16:55,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:16:55,846 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:16:55,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:16:55,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:16:56,139 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:16:56,142 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:16:56,142 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:16:56,142 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:16:56,142 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:16:56,143 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:16:56,143 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:56,143 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:16:56,143 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:16:56,143 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:16:56,143 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:16:56,143 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:16:56,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:56,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:56,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:56,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:56,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:16:56,210 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:16:56,211 INFO L489 LassoAnalysis]: Using template 'affine'. 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 11:16:56,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:56,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:56,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:16:56,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:56,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:56,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:56,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:16:56,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:16:56,220 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:56,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:56,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:56,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:16:56,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:56,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:56,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:56,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:16:56,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:16:56,257 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:56,290 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:56,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:56,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:16:56,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:56,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:56,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:56,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:16:56,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:16:56,295 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:56,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:16:56,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:16:56,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:16:56,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:16:56,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:16:56,337 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:16:56,337 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:16:56,346 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:16:56,363 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-07-01 11:16:56,363 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:16:56,370 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:16:56,376 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 11:16:56,377 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:16:56,377 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [1*ULTIMATE.start_main_~m~0 - 1 >= 0] [2020-07-01 11:16:56,410 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 11:16:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:16:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:56,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:16:56,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:16:56,452 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:16:56,452 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:16:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:16:56,505 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:16:56,505 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-07-01 11:16:56,505 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-07-01 11:16:56,546 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 8 states. [2020-07-01 11:16:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:16:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:16:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-07-01 11:16:56,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 11:16:56,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:56,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:16:56,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:56,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 11:16:56,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:16:56,550 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2020-07-01 11:16:56,551 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:16:56,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2020-07-01 11:16:56,552 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:16:56,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:16:56,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:16:56,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:16:56,552 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:16:56,552 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:16:56,552 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:16:56,552 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:16:56,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:16:56,553 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:16:56,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:16:56,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:16:56 BasicIcfg [2020-07-01 11:16:56,559 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:16:56,562 INFO L168 Benchmark]: Toolchain (without parser) took 2941.60 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 556.3 MB in the beginning and 395.4 MB in the end (delta: 160.9 MB). Peak memory consumption was 200.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,562 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 578.0 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:16:56,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.71 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 556.3 MB in the beginning and 652.2 MB in the end (delta: -95.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 688.9 MB. Free memory was 652.2 MB in the beginning and 650.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,565 INFO L168 Benchmark]: Boogie Preprocessor took 19.63 ms. Allocated memory is still 688.9 MB. Free memory was 650.9 MB in the beginning and 649.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,565 INFO L168 Benchmark]: RCFGBuilder took 235.26 ms. Allocated memory is still 688.9 MB. Free memory was 649.5 MB in the beginning and 635.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,566 INFO L168 Benchmark]: BlockEncodingV2 took 72.33 ms. Allocated memory is still 688.9 MB. Free memory was 635.1 MB in the beginning and 629.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,566 INFO L168 Benchmark]: TraceAbstraction took 145.16 ms. Allocated memory is still 688.9 MB. Free memory was 628.3 MB in the beginning and 620.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,567 INFO L168 Benchmark]: BuchiAutomizer took 2129.05 ms. Allocated memory is still 688.9 MB. Free memory was 620.2 MB in the beginning and 395.4 MB in the end (delta: 224.7 MB). Peak memory consumption was 224.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:16:56,570 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 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 578.0 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 299.71 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 556.3 MB in the beginning and 652.2 MB in the end (delta: -95.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 688.9 MB. Free memory was 652.2 MB in the beginning and 650.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.63 ms. Allocated memory is still 688.9 MB. Free memory was 650.9 MB in the beginning and 649.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 235.26 ms. Allocated memory is still 688.9 MB. Free memory was 649.5 MB in the beginning and 635.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.33 ms. Allocated memory is still 688.9 MB. Free memory was 635.1 MB in the beginning and 629.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.16 ms. Allocated memory is still 688.9 MB. Free memory was 628.3 MB in the beginning and 620.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2129.05 ms. Allocated memory is still 688.9 MB. Free memory was 620.2 MB in the beginning and 395.4 MB in the end (delta: 224.7 MB). Peak memory consumption was 224.7 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: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 21 SDslu, 0 SDs, 0 SdLazy, 33 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp100 dnf100 smp100 tf107 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 51ms VariablesStem: 3 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:16:50.319 ----------------------------------------------- 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_A2aYEF/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:16:57.255 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check