/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 10:42:21,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:42:21,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:42:21,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:42:21,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:42:21,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:42:21,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:42:21,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:42:21,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:42:21,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:42:21,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:42:21,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:42:21,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:42:21,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:42:21,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:42:21,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:42:21,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:42:21,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:42:21,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:42:21,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:42:21,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:42:21,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:42:21,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:42:21,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:42:21,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:42:21,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:42:21,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:42:21,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:42:21,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:42:21,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:42:21,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:42:21,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:42:21,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:42:21,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:42:21,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:42:21,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:42:21,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:42:21,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:42:21,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:42:21,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:42:21,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:42:21,216 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:42:21,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:42:21,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:42:21,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:42:21,232 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:42:21,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:42:21,232 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:42:21,233 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:42:21,233 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:42:21,233 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:42:21,233 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:42:21,233 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:42:21,233 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:42:21,234 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:42:21,234 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:42:21,234 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:21,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:42:21,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:42:21,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:42:21,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:42:21,235 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:42:21,235 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:42:21,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:42:21,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:42:21,236 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:42:21,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:42:21,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:42:21,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:42:21,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:42:21,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:42:21,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:42:21,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:42:21,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:42:21,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:42:21,427 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:42:21,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:42:21,493 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ByZaXJ/tmp/9792eb9f60154abba0086d6908e10cca/FLAG127b04c3b [2020-07-01 10:42:21,836 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:42:21,837 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:42:21,843 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_ByZaXJ/tmp/9792eb9f60154abba0086d6908e10cca/FLAG127b04c3b [2020-07-01 10:42:22,237 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_ByZaXJ/tmp/9792eb9f60154abba0086d6908e10cca [2020-07-01 10:42:22,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:42:22,250 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:42:22,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:42:22,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:42:22,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:42:22,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf81629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22, skipping insertion in model container [2020-07-01 10:42:22,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:42:22,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:42:22,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:42:22,515 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:42:22,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:42:22,547 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:42:22,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22 WrapperNode [2020-07-01 10:42:22,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:42:22,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:42:22,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:42:22,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:42:22,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:42:22,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:42:22,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:42:22,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:42:22,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:42:22,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:42:22,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:42:22,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:42:22,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (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 10:42:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:42:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:42:22,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:42:22,831 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:42:22,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:42:22 BoogieIcfgContainer [2020-07-01 10:42:22,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:42:22,835 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:42:22,836 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:42:22,838 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:42:22,838 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:42:22" (1/1) ... [2020-07-01 10:42:22,850 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 10 edges [2020-07-01 10:42:22,852 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:42:22,853 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:42:22,853 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:42:22,853 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:42:22,855 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:42:22,856 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:42:22,856 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:42:22,870 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:42:22,884 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 10:42:22,889 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 10:42:22,890 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:42:22,904 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:42:22,906 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:42:22,907 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:42:22,907 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:42:22,907 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:42:22,908 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:42:22,908 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 10:42:22,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:42:22 BasicIcfg [2020-07-01 10:42:22,909 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:42:22,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:42:22,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:42:22,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:42:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:42:22" (1/4) ... [2020-07-01 10:42:22,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbc3194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:42:22, skipping insertion in model container [2020-07-01 10:42:22,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (2/4) ... [2020-07-01 10:42:22,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbc3194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:42:22, skipping insertion in model container [2020-07-01 10:42:22,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:42:22" (3/4) ... [2020-07-01 10:42:22,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbc3194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:42:22, skipping insertion in model container [2020-07-01 10:42:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:42:22" (4/4) ... [2020-07-01 10:42:22,917 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:42:22,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:42:22,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:42:22,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:42:22,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:42:22,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:42:22,972 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:42:22,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:42:22,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:42:22,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:42:22,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:42:22,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:42:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 10:42:22,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:42:22,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 10:42:23,047 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:42:23,047 INFO L268 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-07-01 10:42:23,047 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 16) no Hoare annotation was computed. [2020-07-01 10:42:23,048 INFO L271 CegarLoopResult]: At program point L11-2(lines 11 18) the Hoare annotation is: true [2020-07-01 10:42:23,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:42:23 BasicIcfg [2020-07-01 10:42:23,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:42:23,057 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:42:23,057 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:42:23,061 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:42:23,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:42:23,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:42:22" (1/5) ... [2020-07-01 10:42:23,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a8a52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:42:23, skipping insertion in model container [2020-07-01 10:42:23,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:42:23,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:42:22" (2/5) ... [2020-07-01 10:42:23,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a8a52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:42:23, skipping insertion in model container [2020-07-01 10:42:23,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:42:23,064 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:42:22" (3/5) ... [2020-07-01 10:42:23,064 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a8a52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:42:23, skipping insertion in model container [2020-07-01 10:42:23,064 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:42:23,064 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:42:22" (4/5) ... [2020-07-01 10:42:23,065 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a8a52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:42:23, skipping insertion in model container [2020-07-01 10:42:23,065 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:42:23,065 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:42:23" (5/5) ... [2020-07-01 10:42:23,067 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:42:23,096 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:42:23,096 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:42:23,096 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:42:23,096 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:42:23,096 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:42:23,096 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:42:23,097 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:42:23,097 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:42:23,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:42:23,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:23,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:42:23,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:42:23,122 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:42:23,122 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:42:23,123 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:42:23,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:42:23,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:23,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:42:23,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:42:23,124 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:42:23,124 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:42:23,129 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 6#L11-2true [2020-07-01 10:42:23,129 INFO L796 eck$LassoCheckResult]: Loop: 6#L11-2true [37] L11-2-->L12: Formula: (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 5#L12true [36] L12-->L12-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~x~0_9 (+ v_ULTIMATE.start_main_~x~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L12-2true [25] L12-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 6#L11-2true [2020-07-01 10:42:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:23,136 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-07-01 10:42:23,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:23,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205306259] [2020-07-01 10:42:23,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,223 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash 66489, now seen corresponding path program 1 times [2020-07-01 10:42:23,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:23,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261678963] [2020-07-01 10:42:23,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,244 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1734785, now seen corresponding path program 1 times [2020-07-01 10:42:23,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:23,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660316776] [2020-07-01 10:42:23,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:23,262 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:23,318 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:23,319 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:23,319 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:23,319 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:23,320 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:42:23,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:23,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:23,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:23,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:42:23,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:23,321 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:23,340 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 10:42:23,351 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 10:42:23,356 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 10:42:23,368 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 10:42:23,454 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:23,454 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 10:42:23,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:23,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:23,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:42:23,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/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 10:42:23,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:23,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:23,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:42:23,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/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 10:42:23,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:23,542 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 10:42:23,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:42:23,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:23,766 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:42:23,768 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:23,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:23,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:23,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:23,769 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:42:23,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:23,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:23,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:23,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:42:23,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:23,770 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:23,772 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 10:42:23,776 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 10:42:23,783 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 10:42:23,787 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 10:42:23,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:23,870 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:23,876 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 10:42:23,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:42:23,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:42:23,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:42:23,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:42:23,886 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:42:23,886 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:42:23,893 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:23,927 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 10:42:23,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:42:23,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:42:23,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:42:23,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:42:23,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:42:23,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:42:23,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:42:23,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:42:23,943 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:42:23,944 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:23,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:42:23,948 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:42:23,948 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:42:23,949 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 10:42:23,984 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:42:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:24,030 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:42:24,031 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:24,042 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:42:24,042 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:24,087 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 10:42:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:24,147 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:42:24,148 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:24,156 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 10:42:24,161 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 4 loop predicates [2020-07-01 10:42:24,163 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 10:42:24,223 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 17 states and 26 transitions. Complement of second has 7 states. [2020-07-01 10:42:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 10:42:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:42:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-07-01 10:42:24,228 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 10:42:24,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:24,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:42:24,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:24,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 10:42:24,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:24,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2020-07-01 10:42:24,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:24,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 18 transitions. [2020-07-01 10:42:24,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:42:24,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 10:42:24,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18 transitions. [2020-07-01 10:42:24,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:42:24,247 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-07-01 10:42:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 18 transitions. [2020-07-01 10:42:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-07-01 10:42:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 10:42:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2020-07-01 10:42:24,276 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-07-01 10:42:24,276 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-07-01 10:42:24,276 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:42:24,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 16 transitions. [2020-07-01 10:42:24,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:24,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:42:24,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:42:24,278 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:42:24,278 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:42:24,278 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 76#L11-2 [38] L11-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 77#L12 [27] L12-->L12-2: Formula: (and (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 70#L12-2 [2020-07-01 10:42:24,278 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 [25] L12-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 71#L11-2 [37] L11-2-->L12: Formula: (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 79#L12 [36] L12-->L12-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~x~0_9 (+ v_ULTIMATE.start_main_~x~0_10 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 70#L12-2 [2020-07-01 10:42:24,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:24,279 INFO L82 PathProgramCache]: Analyzing trace with hash 55982, now seen corresponding path program 1 times [2020-07-01 10:42:24,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:24,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940358266] [2020-07-01 10:42:24,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:24,289 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash 54999, now seen corresponding path program 2 times [2020-07-01 10:42:24,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:24,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237157515] [2020-07-01 10:42:24,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:24,299 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:24,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1667784970, now seen corresponding path program 1 times [2020-07-01 10:42:24,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:24,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846491075] [2020-07-01 10:42:24,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 10:42:24,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846491075] [2020-07-01 10:42:24,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 10:42:24,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 10:42:24,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183498641] [2020-07-01 10:42:24,401 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:24,402 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:24,402 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:24,402 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:24,402 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:42:24,402 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:24,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:24,403 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:24,403 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:42:24,403 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:24,403 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:24,405 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 10:42:24,414 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 10:42:24,419 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 10:42:24,427 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 10:42:24,493 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:24,494 INFO L404 LassoAnalysis]: Checking for nontermination... 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 10:42:24,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:24,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:24,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:42:24,506 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 10:42:24,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:24,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:24,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:42:24,545 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:24,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:24,579 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:24,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:42:24,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:24,790 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:42:24,792 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:24,793 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:24,793 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:24,793 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:24,793 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:42:24,793 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:24,793 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:24,793 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:24,794 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:42:24,794 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:24,794 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:24,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:42:24,800 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 10:42:24,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:42:24,814 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 10:42:24,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:24,870 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:24,873 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 10:42:24,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:42:24,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:42:24,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:42:24,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:42:24,878 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 10:42:24,878 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 10:42:24,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 10:42:24,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 10:42:24,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:42:24,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:42:24,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:42:24,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:42:24,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:42:24,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:42:24,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:42:24,926 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:42:24,940 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:42:24,941 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 10:42:24,945 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:42:24,945 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:42:24,946 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:42:24,946 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 10:42:24,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:42:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:24,995 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:42:24,995 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:25,000 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:42:25,001 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:25,013 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 10:42:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:25,028 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:42:25,028 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:25,039 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 10:42:25,040 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 10:42:25,040 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 16 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-07-01 10:42:25,075 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 16 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 22 states and 33 transitions. Complement of second has 11 states. [2020-07-01 10:42:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 10:42:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 10:42:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-07-01 10:42:25,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-01 10:42:25,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 10:42:25,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-01 10:42:25,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 33 transitions. [2020-07-01 10:42:25,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 10:42:25,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 21 transitions. [2020-07-01 10:42:25,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:42:25,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 10:42:25,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2020-07-01 10:42:25,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:42:25,082 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2020-07-01 10:42:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2020-07-01 10:42:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 8. [2020-07-01 10:42:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:42:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2020-07-01 10:42:25,084 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 13 transitions. [2020-07-01 10:42:25,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 10:42:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 10:42:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 10:42:25,087 INFO L87 Difference]: Start difference. First operand 8 states and 13 transitions. Second operand 4 states. [2020-07-01 10:42:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 10:42:25,107 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2020-07-01 10:42:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 10:42:25,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2020-07-01 10:42:25,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:25,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 11 transitions. [2020-07-01 10:42:25,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 10:42:25,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 10:42:25,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-07-01 10:42:25,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:42:25,111 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-07-01 10:42:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-07-01 10:42:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-01 10:42:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 10:42:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-07-01 10:42:25,112 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-07-01 10:42:25,113 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-07-01 10:42:25,113 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:42:25,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-07-01 10:42:25,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:42:25,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:42:25,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:42:25,114 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 10:42:25,114 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:42:25,114 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 182#L11-2 [38] L11-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 183#L12 [2020-07-01 10:42:25,114 INFO L796 eck$LassoCheckResult]: Loop: 183#L12 [27] L12-->L12-2: Formula: (and (< v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~y~0_9 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 177#L12-2 [25] L12-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 178#L11-2 [38] L11-2-->L12: Formula: (> v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[] 183#L12 [2020-07-01 10:42:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:25,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1805, now seen corresponding path program 1 times [2020-07-01 10:42:25,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:25,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378082181] [2020-07-01 10:42:25,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,123 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 56551, now seen corresponding path program 1 times [2020-07-01 10:42:25,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:25,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898201937] [2020-07-01 10:42:25,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash 53799515, now seen corresponding path program 1 times [2020-07-01 10:42:25,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:42:25,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524761418] [2020-07-01 10:42:25,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:42:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:42:25,145 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:42:25,171 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:25,171 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:25,171 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:25,171 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:25,172 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:42:25,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:25,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:25,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:25,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:42:25,172 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:25,172 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:25,173 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 10:42:25,180 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 10:42:25,183 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 10:42:25,187 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 10:42:25,248 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:25,249 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:25,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:42:25,252 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:42:25,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:42:25,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:42:25,704 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:42:25,706 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:42:25,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:42:25,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:42:25,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:42:25,707 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:42:25,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:25,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:42:25,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:42:25,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:42:25,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:42:25,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:42:25,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:42:25,715 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 10:42:25,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 10:42:25,721 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 10:42:25,779 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:42:25,780 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:25,785 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 10:42:25,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:42:25,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:42:25,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:42:25,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:42:25,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:42:25,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:42:25,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:42:25,791 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:42:25,797 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 10:42:25,797 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:42:25,799 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:42:25,799 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:42:25,800 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:42:25,800 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 10:42:25,829 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:42:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:42:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:25,846 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:42:25,846 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:42:25,850 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:42:25,851 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:42:25,865 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 10:42:25,866 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 10:42:25,866 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 10:42:25,866 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-07-01 10:42:25,878 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 6 states. [2020-07-01 10:42:25,879 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 10:42:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:42:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 10:42:25,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 10:42:25,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 10:42:25,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 10:42:25,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:42:25,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-07-01 10:42:25,883 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:42:25,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2020-07-01 10:42:25,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:42:25,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:42:25,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:42:25,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:42:25,883 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:42:25,884 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:42:25,884 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:42:25,884 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:42:25,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:42:25,884 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:42:25,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:42:25,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:42:25 BasicIcfg [2020-07-01 10:42:25,890 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:42:25,893 INFO L168 Benchmark]: Toolchain (without parser) took 3642.14 ms. Allocated memory was 514.9 MB in the beginning and 574.1 MB in the end (delta: 59.2 MB). Free memory was 438.5 MB in the beginning and 413.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 84.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,893 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:42:25,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.99 ms. Allocated memory was 514.9 MB in the beginning and 544.2 MB in the end (delta: 29.4 MB). Free memory was 438.5 MB in the beginning and 511.7 MB in the end (delta: -73.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 544.2 MB. Free memory was 511.7 MB in the beginning and 510.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,895 INFO L168 Benchmark]: Boogie Preprocessor took 19.65 ms. Allocated memory is still 544.2 MB. Free memory was 510.1 MB in the beginning and 509.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,896 INFO L168 Benchmark]: RCFGBuilder took 231.87 ms. Allocated memory is still 544.2 MB. Free memory was 509.0 MB in the beginning and 497.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,896 INFO L168 Benchmark]: BlockEncodingV2 took 73.52 ms. Allocated memory is still 544.2 MB. Free memory was 497.4 MB in the beginning and 492.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,897 INFO L168 Benchmark]: TraceAbstraction took 146.67 ms. Allocated memory is still 544.2 MB. Free memory was 491.5 MB in the beginning and 483.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,898 INFO L168 Benchmark]: BuchiAutomizer took 2833.12 ms. Allocated memory was 544.2 MB in the beginning and 574.1 MB in the end (delta: 29.9 MB). Free memory was 482.6 MB in the beginning and 413.3 MB in the end (delta: 69.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:42:25,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 10 edges - StatisticsResult: Encoded RCFG 4 locations, 6 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 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.99 ms. Allocated memory was 514.9 MB in the beginning and 544.2 MB in the end (delta: 29.4 MB). Free memory was 438.5 MB in the beginning and 511.7 MB in the end (delta: -73.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 544.2 MB. Free memory was 511.7 MB in the beginning and 510.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.65 ms. Allocated memory is still 544.2 MB. Free memory was 510.1 MB in the beginning and 509.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 231.87 ms. Allocated memory is still 544.2 MB. Free memory was 509.0 MB in the beginning and 497.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.52 ms. Allocated memory is still 544.2 MB. Free memory was 497.4 MB in the beginning and 492.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 146.67 ms. Allocated memory is still 544.2 MB. Free memory was 491.5 MB in the beginning and 483.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2833.12 ms. Allocated memory was 544.2 MB in the beginning and 574.1 MB in the end (delta: 29.9 MB). Free memory was 482.6 MB in the beginning and 413.3 MB in the end (delta: 69.2 MB). Peak memory consumption was 99.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function y + -1 * x and consists of 5 locations. One nondeterministic module has affine ranking function y + -1 * x and consists of 5 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 26 SDslu, 12 SDs, 0 SdLazy, 57 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 10:42:18.981 ----------------------------------------------- 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_ByZaXJ/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:42:26.535 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check