/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 10:36:51,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:36:51,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:36:51,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:36:51,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:36:51,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:36:51,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:36:51,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:36:51,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:36:51,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:36:51,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:36:51,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:36:51,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:36:51,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:36:51,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:36:51,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:36:51,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:36:51,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:36:51,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:36:51,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:36:51,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:36:51,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:36:51,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:36:51,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:36:51,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:36:51,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:36:51,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:36:51,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:36:51,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:36:51,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:36:51,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:36:51,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:36:51,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:36:51,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:36:51,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:36:51,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:36:51,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:36:51,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:36:51,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:36:51,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:36:51,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:36:51,273 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:36:51,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:36:51,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:36:51,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:36:51,289 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:36:51,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:36:51,289 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:36:51,289 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:36:51,289 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:36:51,290 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:36:51,291 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:51,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:36:51,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:36:51,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:36:51,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:36:51,292 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:36:51,292 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:36:51,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:36:51,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:36:51,292 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:36:51,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:36:51,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:36:51,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:36:51,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:36:51,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:36:51,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:36:51,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:36:51,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:36:51,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:36:51,478 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:36:51,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:36:51,545 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_l9zVV0/tmp/0566875ba73a468c95ec775f8c5c2b0b/FLAGd710c707e [2020-07-01 10:36:51,888 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:36:51,889 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:36:51,896 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_l9zVV0/tmp/0566875ba73a468c95ec775f8c5c2b0b/FLAGd710c707e [2020-07-01 10:36:52,290 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_l9zVV0/tmp/0566875ba73a468c95ec775f8c5c2b0b [2020-07-01 10:36:52,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:36:52,303 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:36:52,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:36:52,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:36:52,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:36:52,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7338678e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52, skipping insertion in model container [2020-07-01 10:36:52,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:36:52,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:36:52,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:36:52,570 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:36:52,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:36:52,601 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:36:52,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52 WrapperNode [2020-07-01 10:36:52,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:36:52,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:36:52,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:36:52,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:36:52,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:36:52,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:36:52,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:36:52,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:36:52,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:36:52,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:36:52,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:36:52,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:36:52,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (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 10:36:52,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:36:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:36:52,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:36:52,888 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:36:52,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:52 BoogieIcfgContainer [2020-07-01 10:36:52,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:36:52,892 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:36:52,892 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:36:52,895 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:36:52,896 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:52" (1/1) ... [2020-07-01 10:36:52,908 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 10:36:52,910 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:36:52,911 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:36:52,911 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:36:52,911 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:36:52,913 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:36:52,914 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:36:52,914 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:36:52,929 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:36:52,945 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:36:52,949 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:36:52,951 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:36:52,962 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 10:36:52,964 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 10:36:52,966 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:36:52,966 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:36:52,971 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 10:36:52,972 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:36:52,972 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:36:52,972 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:36:52,972 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:36:52,973 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:36:52,973 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 3 edges [2020-07-01 10:36:52,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:52 BasicIcfg [2020-07-01 10:36:52,974 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:36:52,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:36:52,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:36:52,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:36:52,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:36:52" (1/4) ... [2020-07-01 10:36:52,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a17bfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:36:52, skipping insertion in model container [2020-07-01 10:36:52,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (2/4) ... [2020-07-01 10:36:52,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a17bfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:36:52, skipping insertion in model container [2020-07-01 10:36:52,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:52" (3/4) ... [2020-07-01 10:36:52,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a17bfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:52, skipping insertion in model container [2020-07-01 10:36:52,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:52" (4/4) ... [2020-07-01 10:36:52,982 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:36:52,993 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:36:53,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:36:53,013 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:36:53,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:36:53,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:36:53,036 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:36:53,037 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:36:53,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:36:53,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:36:53,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:36:53,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:36:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 10:36:53,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:36:53,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 10:36:53,111 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:36:53,112 INFO L271 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: true [2020-07-01 10:36:53,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:53 BasicIcfg [2020-07-01 10:36:53,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:36:53,121 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:36:53,121 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:36:53,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:36:53,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:53,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:36:52" (1/5) ... [2020-07-01 10:36:53,126 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@270e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:36:53, skipping insertion in model container [2020-07-01 10:36:53,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:53,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:36:52" (2/5) ... [2020-07-01 10:36:53,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@270e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:36:53, skipping insertion in model container [2020-07-01 10:36:53,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:53,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:36:52" (3/5) ... [2020-07-01 10:36:53,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@270e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:36:53, skipping insertion in model container [2020-07-01 10:36:53,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:53,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:36:52" (4/5) ... [2020-07-01 10:36:53,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@270e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:36:53, skipping insertion in model container [2020-07-01 10:36:53,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:36:53,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:36:53" (5/5) ... [2020-07-01 10:36:53,130 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:36:53,159 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:36:53,159 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:36:53,159 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:36:53,159 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:36:53,160 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:36:53,160 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:36:53,160 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:36:53,160 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:36:53,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:36:53,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:36:53,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:53,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:53,185 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:36:53,186 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:36:53,186 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:36:53,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:36:53,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:36:53,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:53,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:53,187 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:36:53,187 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:36:53,192 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [40] ULTIMATE.startENTRY-->L21-2: Formula: (= v_ULTIMATE.start_main_~a~0_7 v_ULTIMATE.start_main_~b~0_7) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 4#L21-2true [2020-07-01 10:36:53,192 INFO L796 eck$LassoCheckResult]: Loop: 4#L21-2true [36] L21-2-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_5 (+ v_ULTIMATE.start_main_~b~0_6 (* v_ULTIMATE.start_main_~a~0_6 (- 1)) v_ULTIMATE.start_main_~y~0_6 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_6) (= v_ULTIMATE.start_main_~x~0_5 (+ (* v_ULTIMATE.start_main_~b~0_6 (- 1)) v_ULTIMATE.start_main_~a~0_6 v_ULTIMATE.start_main_~x~0_6 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L21-2true [2020-07-01 10:36:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash 71, now seen corresponding path program 1 times [2020-07-01 10:36:53,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:53,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481518639] [2020-07-01 10:36:53,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,275 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 67, now seen corresponding path program 1 times [2020-07-01 10:36:53,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:53,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466192688] [2020-07-01 10:36:53,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,299 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash 2237, now seen corresponding path program 1 times [2020-07-01 10:36:53,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:53,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346322367] [2020-07-01 10:36:53,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:53,316 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:53,359 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:53,360 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:53,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:53,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:53,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:53,361 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:53,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:53,361 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:53,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:36:53,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:53,362 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:53,380 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 10:36:53,450 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:53,451 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 10:36:53,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:53,477 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 10:36:53,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:53,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:53,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:53,940 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~a~0=1, ULTIMATE.start_main_~x~0=0, ULTIMATE.start_main_~b~0=-6} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~a~0=1, ULTIMATE.start_main_~x~0=0, ULTIMATE.start_main_~b~0=-6} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~a~0=0, ULTIMATE.start_main_~x~0=6, ULTIMATE.start_main_~b~0=0}, {ULTIMATE.start_main_~y~0=-2, ULTIMATE.start_main_~a~0=4, ULTIMATE.start_main_~x~0=0, ULTIMATE.start_main_~b~0=4}, {ULTIMATE.start_main_~y~0=2, ULTIMATE.start_main_~a~0=-4, ULTIMATE.start_main_~x~0=0, ULTIMATE.start_main_~b~0=-4}] Lambdas: [1, 2, 1] Nus: [0, 1] [2020-07-01 10:36:53,977 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:53,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:53,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:53,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:53,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:53,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:53,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:53,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:53,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Lasso [2020-07-01 10:36:53,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:53,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:53,981 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 10:36:53,985 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 10:36:53,989 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 10:36:53,992 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 10:36:53,995 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 10:36:53,998 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 10:36:54,086 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:54,086 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:54,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:54,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:54,095 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:54,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:54,134 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:54,134 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 10:36:54,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:54,172 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:54,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=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 10:36:54,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:54,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:54,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 10:36:54,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:54,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:54,249 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:54,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:54,283 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:54,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:54,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:56,184 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:56,188 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:56,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:56,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:56,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:56,189 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:56,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:56,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:56,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:56,190 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Lasso [2020-07-01 10:36:56,190 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:56,190 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:56,192 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 10:36:56,195 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 10:36:56,199 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 10:36:56,202 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 10:36:56,204 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 10:36:56,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:36:56,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:56,298 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:56,305 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 10:36:56,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:56,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,312 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:56,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:56,315 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:56,358 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 10:36:56,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:56,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,362 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:56,362 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:56,364 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:56,398 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 10:36:56,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:56,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:56,402 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:56,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:56,438 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 10:36:56,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:56,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:56,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:56,444 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 10:36:56,477 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 10:36:56,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:36:56,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:36:56,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:36:56,483 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 10:36:56,517 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 10:36:56,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:56,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:56,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:56,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:56,531 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:56,531 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:56,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:56,556 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-07-01 10:36:56,556 INFO L444 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. 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 10:36:56,581 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:56,593 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 10:36:56,593 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:56,594 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~b~0 - 1*ULTIMATE.start_main_~a~0 >= 0] [2020-07-01 10:36:56,631 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 10:36:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:56,694 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 10:36:56,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:36:56,708 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:36:56,708 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:36:56,709 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 10:36:56,734 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:36:56,739 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 10:36:56,741 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states. Second operand 2 states. [2020-07-01 10:36:56,799 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states.. Second operand 2 states. Result 6 states and 11 transitions. Complement of second has 4 states. [2020-07-01 10:36:56,800 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 10:36:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 10:36:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 10:36:56,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-01 10:36:56,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:56,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 10:36:56,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:56,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 10:36:56,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:36:56,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 11 transitions. [2020-07-01 10:36:56,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:36:56,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 11 transitions. [2020-07-01 10:36:56,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 10:36:56,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 10:36:56,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 11 transitions. [2020-07-01 10:36:56,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:36:56,818 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 11 transitions. [2020-07-01 10:36:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 11 transitions. [2020-07-01 10:36:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-07-01 10:36:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 10:36:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-07-01 10:36:56,846 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 10 transitions. [2020-07-01 10:36:56,846 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 10 transitions. [2020-07-01 10:36:56,846 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:36:56,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 10 transitions. [2020-07-01 10:36:56,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:36:56,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:36:56,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:36:56,847 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:36:56,848 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:36:56,848 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY [40] ULTIMATE.startENTRY-->L21-2: Formula: (= v_ULTIMATE.start_main_~a~0_7 v_ULTIMATE.start_main_~b~0_7) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_7|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~a~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~b~0, ULTIMATE.start_main_~x~0] 47#L21-2 [37] L21-2-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_5 (+ v_ULTIMATE.start_main_~b~0_6 (* v_ULTIMATE.start_main_~a~0_6 (- 1)) v_ULTIMATE.start_main_~y~0_6 (- 1))) (= v_ULTIMATE.start_main_~x~0_5 (+ (* v_ULTIMATE.start_main_~b~0_6 (- 1)) v_ULTIMATE.start_main_~a~0_6 v_ULTIMATE.start_main_~x~0_6 (- 1))) (<= 0 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 48#L21-2 [2020-07-01 10:36:56,848 INFO L796 eck$LassoCheckResult]: Loop: 48#L21-2 [37] L21-2-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_5 (+ v_ULTIMATE.start_main_~b~0_6 (* v_ULTIMATE.start_main_~a~0_6 (- 1)) v_ULTIMATE.start_main_~y~0_6 (- 1))) (= v_ULTIMATE.start_main_~x~0_5 (+ (* v_ULTIMATE.start_main_~b~0_6 (- 1)) v_ULTIMATE.start_main_~a~0_6 v_ULTIMATE.start_main_~x~0_6 (- 1))) (<= 0 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~a~0=v_ULTIMATE.start_main_~a~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_~b~0=v_ULTIMATE.start_main_~b~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 48#L21-2 [2020-07-01 10:36:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2238, now seen corresponding path program 1 times [2020-07-01 10:36:56,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:56,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966963716] [2020-07-01 10:36:56,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,859 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:56,859 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-07-01 10:36:56,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:56,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796762964] [2020-07-01 10:36:56,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,867 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:36:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 69415, now seen corresponding path program 2 times [2020-07-01 10:36:56,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:36:56,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328609075] [2020-07-01 10:36:56,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:36:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:36:56,881 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:36:56,897 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:56,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:56,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:56,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:56,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:56,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:56,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:56,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:56,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:36:56,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:56,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:56,899 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 10:36:56,943 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:56,943 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:56,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:56,948 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:56,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:56,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:58,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:36:58,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~a~0=1, ULTIMATE.start_main_~b~0=7, ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~a~0=1, ULTIMATE.start_main_~b~0=7, ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=3, ULTIMATE.start_main_~a~0=3, ULTIMATE.start_main_~b~0=3, ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~a~0=-7, ULTIMATE.start_main_~b~0=-7, ULTIMATE.start_main_~x~0=-8}, {ULTIMATE.start_main_~y~0=2, ULTIMATE.start_main_~a~0=4, ULTIMATE.start_main_~b~0=4, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 1] Nus: [0, 0] [2020-07-01 10:36:58,456 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:58,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:58,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:58,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:58,457 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:36:58,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:58,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:58,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:58,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-07-01 10:36:58,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:58,458 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:58,460 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 10:36:58,474 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 10:36:58,477 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 10:36:58,479 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 10:36:58,482 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 10:36:58,485 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 10:36:58,536 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:58,537 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:58,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:36:58,542 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:36:58,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:36:58,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:36:59,804 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:36:59,808 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:36:59,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:36:59,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:36:59,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:36:59,809 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:36:59,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:59,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:36:59,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:36:59,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-07-01 10:36:59,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:36:59,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:36:59,812 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 10:36:59,825 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 10:36:59,828 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 10:36:59,831 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 10:36:59,839 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 10:36:59,843 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 10:36:59,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:36:59,899 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:59,904 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 10:36:59,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:36:59,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:36:59,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:36:59,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:36:59,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:36:59,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:36:59,928 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:36:59,939 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-07-01 10:36:59,939 INFO L444 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:36:59,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:36:59,952 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 10:36:59,953 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:36:59,953 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~a~0 - 1*ULTIMATE.start_main_~b~0 >= 0] [2020-07-01 10:36:59,985 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 10:37:00,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:37:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:00,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 10:37:00,024 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:37:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:37:00,035 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:37:00,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:37:00,036 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 10:37:00,046 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:37:00,046 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 2 loop predicates [2020-07-01 10:37:00,046 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 10 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-07-01 10:37:00,077 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 10 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 8 states and 16 transitions. Complement of second has 5 states. [2020-07-01 10:37:00,077 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 10:37:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:37:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-07-01 10:37:00,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 10:37:00,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:37:00,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 10:37:00,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:37:00,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 10:37:00,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:37:00,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 16 transitions. [2020-07-01 10:37:00,081 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:37:00,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-07-01 10:37:00,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:37:00,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:37:00,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:37:00,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:37:00,082 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:37:00,082 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:37:00,082 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:37:00,082 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:37:00,082 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:37:00,082 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:37:00,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:37:00,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:37:00 BasicIcfg [2020-07-01 10:37:00,088 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:37:00,091 INFO L168 Benchmark]: Toolchain (without parser) took 7787.19 ms. Allocated memory was 514.9 MB in the beginning and 585.1 MB in the end (delta: 70.3 MB). Free memory was 438.7 MB in the beginning and 438.0 MB in the end (delta: 642.7 kB). Peak memory consumption was 70.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,092 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:37:00,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.09 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 438.7 MB in the beginning and 530.6 MB in the end (delta: -91.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 562.6 MB. Free memory was 530.6 MB in the beginning and 529.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,093 INFO L168 Benchmark]: Boogie Preprocessor took 20.27 ms. Allocated memory is still 562.6 MB. Free memory was 529.2 MB in the beginning and 527.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,094 INFO L168 Benchmark]: RCFGBuilder took 232.49 ms. Allocated memory is still 562.6 MB. Free memory was 527.8 MB in the beginning and 515.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,094 INFO L168 Benchmark]: BlockEncodingV2 took 81.58 ms. Allocated memory is still 562.6 MB. Free memory was 515.8 MB in the beginning and 509.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,095 INFO L168 Benchmark]: TraceAbstraction took 145.59 ms. Allocated memory is still 562.6 MB. Free memory was 509.2 MB in the beginning and 501.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,096 INFO L168 Benchmark]: BuchiAutomizer took 6967.40 ms. Allocated memory was 562.6 MB in the beginning and 585.1 MB in the end (delta: 22.5 MB). Free memory was 501.0 MB in the beginning and 438.0 MB in the end (delta: 62.9 MB). Peak memory consumption was 85.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:37:00,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 2 locations, 3 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 298.09 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 438.7 MB in the beginning and 530.6 MB in the end (delta: -91.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 562.6 MB. Free memory was 530.6 MB in the beginning and 529.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.27 ms. Allocated memory is still 562.6 MB. Free memory was 529.2 MB in the beginning and 527.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 232.49 ms. Allocated memory is still 562.6 MB. Free memory was 527.8 MB in the beginning and 515.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.58 ms. Allocated memory is still 562.6 MB. Free memory was 515.8 MB in the beginning and 509.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.59 ms. Allocated memory is still 562.6 MB. Free memory was 509.2 MB in the beginning and 501.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 6967.40 ms. Allocated memory was 562.6 MB in the beginning and 585.1 MB in the end (delta: 22.5 MB). Free memory was 501.0 MB in the beginning and 438.0 MB in the end (delta: 62.9 MB). Peak memory consumption was 85.5 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: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 6.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf92 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq184 hnf94 smp100 dnf100 smp100 tf101 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 80ms VariablesStem: 2 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:36:49.032 ----------------------------------------------- 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_l9zVV0/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:37:00.734 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check