/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:41:07,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:41:07,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:41:07,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:41:07,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:41:07,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:41:07,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:41:07,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:41:07,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:41:07,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:41:07,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:41:07,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:41:07,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:41:07,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:41:07,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:41:07,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:41:07,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:41:07,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:41:07,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:41:07,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:41:07,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:41:07,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:41:07,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:41:07,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:41:07,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:41:07,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:41:07,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:41:07,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:41:07,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:41:07,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:41:07,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:41:07,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:41:07,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:41:07,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:41:07,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:41:07,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:41:07,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:41:07,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:41:07,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:41:07,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:41:07,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:41:07,295 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:41:07,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:41:07,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:41:07,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:41:07,311 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:41:07,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:41:07,311 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:41:07,312 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:41:07,312 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:41:07,312 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:41:07,312 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:41:07,312 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:41:07,312 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:41:07,313 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:41:07,313 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:41:07,313 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:07,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:41:07,313 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:41:07,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:41:07,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:41:07,314 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:41:07,314 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:41:07,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:41:07,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:41:07,314 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:41:07,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:41:07,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:41:07,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:41:07,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:41:07,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:41:07,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:41:07,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:41:07,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:41:07,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:41:07,499 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:41:07,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:41:07,564 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_COLUNm/tmp/40b16725432c451ea3252d5d1145c291/FLAG1991b9c1b [2020-07-01 11:41:07,895 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:41:07,896 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:41:07,902 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_COLUNm/tmp/40b16725432c451ea3252d5d1145c291/FLAG1991b9c1b [2020-07-01 11:41:08,345 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_COLUNm/tmp/40b16725432c451ea3252d5d1145c291 [2020-07-01 11:41:08,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:41:08,358 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:41:08,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:41:08,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:41:08,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:41:08,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d96048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08, skipping insertion in model container [2020-07-01 11:41:08,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:41:08,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:41:08,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:41:08,609 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:41:08,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:41:08,638 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:41:08,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08 WrapperNode [2020-07-01 11:41:08,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:41:08,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:41:08,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:41:08,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:41:08,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:41:08,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:41:08,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:41:08,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:41:08,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:41:08,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:41:08,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:41:08,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:41:08,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:41:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:41:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:41:08,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:41:08,888 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:41:08,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:41:08 BoogieIcfgContainer [2020-07-01 11:41:08,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:41:08,892 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:41:08,892 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:41:08,894 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:41:08,895 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:41:08" (1/1) ... [2020-07-01 11:41:08,907 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 11:41:08,908 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:41:08,908 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:41:08,909 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:41:08,909 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:41:08,911 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:41:08,912 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:41:08,912 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:41:08,926 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:41:08,940 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:41:08,944 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:41:08,945 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:41:08,958 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 11:41:08,960 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 11:41:08,961 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:41:08,962 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:41:08,962 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:41:08,962 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:41:08,963 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 11:41:08,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:41:08 BasicIcfg [2020-07-01 11:41:08,963 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:41:08,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:41:08,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:41:08,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:41:08,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:41:08" (1/4) ... [2020-07-01 11:41:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:41:08, skipping insertion in model container [2020-07-01 11:41:08,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (2/4) ... [2020-07-01 11:41:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:41:08, skipping insertion in model container [2020-07-01 11:41:08,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:41:08" (3/4) ... [2020-07-01 11:41:08,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:41:08, skipping insertion in model container [2020-07-01 11:41:08,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:41:08" (4/4) ... [2020-07-01 11:41:08,972 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:41:08,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:41:08,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:41:09,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:41:09,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:41:09,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:41:09,026 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:41:09,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:41:09,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:41:09,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:41:09,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:41:09,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:41:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:41:09,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:41:09,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:41:09,099 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:41:09,099 INFO L268 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-07-01 11:41:09,100 INFO L271 CegarLoopResult]: At program point L10-2(lines 9 13) the Hoare annotation is: true [2020-07-01 11:41:09,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:41:09 BasicIcfg [2020-07-01 11:41:09,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:41:09,109 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:41:09,109 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:41:09,112 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:41:09,113 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:41:09,113 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:41:08" (1/5) ... [2020-07-01 11:41:09,114 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51502df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:41:09, skipping insertion in model container [2020-07-01 11:41:09,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:41:09,114 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:41:08" (2/5) ... [2020-07-01 11:41:09,115 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51502df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:41:09, skipping insertion in model container [2020-07-01 11:41:09,115 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:41:09,115 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:41:08" (3/5) ... [2020-07-01 11:41:09,115 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51502df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:41:09, skipping insertion in model container [2020-07-01 11:41:09,116 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:41:09,116 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:41:08" (4/5) ... [2020-07-01 11:41:09,116 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51502df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:41:09, skipping insertion in model container [2020-07-01 11:41:09,116 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:41:09,116 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:41:09" (5/5) ... [2020-07-01 11:41:09,118 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:41:09,145 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:41:09,146 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:41:09,146 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:41:09,146 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:41:09,146 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:41:09,146 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:41:09,146 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:41:09,147 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:41:09,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:41:09,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:09,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:41:09,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:41:09,174 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:41:09,174 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:41:09,174 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:41:09,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:41:09,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:09,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:41:09,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:41:09,175 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:41:09,175 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:41:09,180 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L10-2true [2020-07-01 11:41:09,181 INFO L796 eck$LassoCheckResult]: Loop: 5#L10-2true [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 3#L10true [35] L10-->L10-2: Formula: (and (> (- 5) v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L10-2true [2020-07-01 11:41:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,187 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-07-01 11:41:09,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591199332] [2020-07-01 11:41:09,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,263 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1957, now seen corresponding path program 1 times [2020-07-01 11:41:09,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954696363] [2020-07-01 11:41:09,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,279 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash 56734, now seen corresponding path program 1 times [2020-07-01 11:41:09,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055548554] [2020-07-01 11:41:09,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,348 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:41:09,349 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:41:09,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:41:09,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:41:09,350 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:41:09,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:09,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:41:09,350 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:41:09,350 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:41:09,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:41:09,351 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:41:09,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:41:09,462 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:09,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:41:09,468 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:09,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:41:09,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:41:09,546 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:41:09,548 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:41:09,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:41:09,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:41:09,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:41:09,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:41:09,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:09,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:41:09,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:41:09,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:41:09,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:41:09,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:41:09,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,627 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:41:09,633 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:09,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:41:09,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:41:09,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:41:09,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:41:09,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:41:09,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:41:09,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:41:09,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:41:09,649 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:41:09,656 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:41:09,656 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:09,661 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:41:09,661 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:41:09,662 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:41:09,663 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:41:09,696 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:41:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:41:09,753 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:41:09,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:41:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:41:09,765 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:41:09,765 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:41:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:41:09,779 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:41:09,785 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 1 loop predicates [2020-07-01 11:41:09,786 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:41:09,818 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 8 states and 14 transitions. Complement of second has 4 states. [2020-07-01 11:41:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:41:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:41:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:41:09,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:41:09,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:09,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:41:09,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:09,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:41:09,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:09,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 14 transitions. [2020-07-01 11:41:09,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:09,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 14 transitions. [2020-07-01 11:41:09,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:41:09,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:41:09,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 14 transitions. [2020-07-01 11:41:09,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:41:09,839 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-07-01 11:41:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 14 transitions. [2020-07-01 11:41:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 11:41:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:41:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-07-01 11:41:09,869 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:41:09,869 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:41:09,869 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:41:09,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-07-01 11:41:09,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:09,870 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:41:09,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:41:09,870 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:41:09,870 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:41:09,871 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 48#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 42#L10 [2020-07-01 11:41:09,871 INFO L796 eck$LassoCheckResult]: Loop: 42#L10 [36] L10-->L10-2: Formula: (and (< (- 5) v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 43#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 42#L10 [2020-07-01 11:41:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1829, now seen corresponding path program 1 times [2020-07-01 11:41:09,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891841369] [2020-07-01 11:41:09,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2108, now seen corresponding path program 1 times [2020-07-01 11:41:09,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272843871] [2020-07-01 11:41:09,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1758816, now seen corresponding path program 1 times [2020-07-01 11:41:09,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:09,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102554672] [2020-07-01 11:41:09,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:09,898 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:09,914 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:41:09,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:41:09,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:41:09,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:41:09,915 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:41:09,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:09,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:41:09,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:41:09,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:41:09,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:41:09,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:41:09,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:09,973 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:41:09,973 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:09,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:41:09,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:41:09,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:41:09,984 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:10,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:41:10,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:41:10,022 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:41:10,022 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:41:10,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:41:10,056 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:41:10,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:41:10,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:41:10,132 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:41:10,134 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:41:10,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:41:10,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:41:10,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:41:10,135 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:41:10,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:10,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:41:10,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:41:10,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:41:10,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:41:10,136 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:41:10,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:10,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:10,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:41:10,195 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:41:10,195 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:10,199 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:41:10,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:41:10,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:41:10,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:41:10,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:41:10,205 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:41:10,205 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:41:10,210 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:10,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:41:10,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:41:10,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:41:10,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:41:10,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:41:10,250 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:41:10,250 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:41:10,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:41:10,290 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:41:10,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:41:10,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:41:10,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:41:10,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:41:10,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:41:10,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:41:10,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:41:10,298 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:41:10,301 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:41:10,301 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 11:41:10,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:41:10,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:41:10,305 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:41:10,305 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:41:10,336 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:41:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:41:10,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:41:10,362 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:41:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:41:10,369 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:41:10,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:41:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:41:10,396 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:41:10,396 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:41:10,396 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-07-01 11:41:10,428 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 23 states and 42 transitions. Complement of second has 9 states. [2020-07-01 11:41:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 11:41:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:41:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-07-01 11:41:10,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 11:41:10,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:10,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:41:10,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:10,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 11:41:10,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:41:10,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 42 transitions. [2020-07-01 11:41:10,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:10,436 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 17 states and 30 transitions. [2020-07-01 11:41:10,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:41:10,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:41:10,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 30 transitions. [2020-07-01 11:41:10,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:41:10,436 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 30 transitions. [2020-07-01 11:41:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 30 transitions. [2020-07-01 11:41:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2020-07-01 11:41:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 11:41:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 24 transitions. [2020-07-01 11:41:10,439 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:41:10,439 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:41:10,439 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:41:10,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 24 transitions. [2020-07-01 11:41:10,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:41:10,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:41:10,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:41:10,440 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:41:10,440 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:41:10,441 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 117#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 121#L10 [26] L10-->L10-2: Formula: (= (- 5) v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 118#L10-2 [2020-07-01 11:41:10,441 INFO L796 eck$LassoCheckResult]: Loop: 118#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 119#L10 [26] L10-->L10-2: Formula: (= (- 5) v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 118#L10-2 [2020-07-01 11:41:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 56725, now seen corresponding path program 1 times [2020-07-01 11:41:10,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:10,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374415697] [2020-07-01 11:41:10,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1948, now seen corresponding path program 1 times [2020-07-01 11:41:10,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:10,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507317714] [2020-07-01 11:41:10,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,455 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:41:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash 54513712, now seen corresponding path program 2 times [2020-07-01 11:41:10,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:41:10,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640222950] [2020-07-01 11:41:10,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:41:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:41:10,464 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:41:10,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:41:10 BasicIcfg [2020-07-01 11:41:10,519 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:41:10,521 INFO L168 Benchmark]: Toolchain (without parser) took 2162.73 ms. Allocated memory was 649.6 MB in the beginning and 675.8 MB in the end (delta: 26.2 MB). Free memory was 556.3 MB in the beginning and 458.2 MB in the end (delta: 98.1 MB). Peak memory consumption was 124.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,522 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:41:10,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.94 ms. Allocated memory was 649.6 MB in the beginning and 675.8 MB in the end (delta: 26.2 MB). Free memory was 556.3 MB in the beginning and 639.3 MB in the end (delta: -83.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.17 ms. Allocated memory is still 675.8 MB. Free memory was 639.3 MB in the beginning and 638.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,524 INFO L168 Benchmark]: Boogie Preprocessor took 18.61 ms. Allocated memory is still 675.8 MB. Free memory was 638.0 MB in the beginning and 636.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,525 INFO L168 Benchmark]: RCFGBuilder took 201.24 ms. Allocated memory is still 675.8 MB. Free memory was 636.6 MB in the beginning and 622.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,525 INFO L168 Benchmark]: BlockEncodingV2 took 71.06 ms. Allocated memory is still 675.8 MB. Free memory was 622.4 MB in the beginning and 618.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,526 INFO L168 Benchmark]: TraceAbstraction took 144.15 ms. Allocated memory is still 675.8 MB. Free memory was 617.0 MB in the beginning and 608.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,526 INFO L168 Benchmark]: BuchiAutomizer took 1409.68 ms. Allocated memory is still 675.8 MB. Free memory was 608.9 MB in the beginning and 458.2 MB in the end (delta: 150.7 MB). Peak memory consumption was 150.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:41:10,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 279.94 ms. Allocated memory was 649.6 MB in the beginning and 675.8 MB in the end (delta: 26.2 MB). Free memory was 556.3 MB in the beginning and 639.3 MB in the end (delta: -83.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.17 ms. Allocated memory is still 675.8 MB. Free memory was 639.3 MB in the beginning and 638.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.61 ms. Allocated memory is still 675.8 MB. Free memory was 638.0 MB in the beginning and 636.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 201.24 ms. Allocated memory is still 675.8 MB. Free memory was 636.6 MB in the beginning and 622.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.06 ms. Allocated memory is still 675.8 MB. Free memory was 622.4 MB in the beginning and 618.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 144.15 ms. Allocated memory is still 675.8 MB. Free memory was 617.0 MB in the beginning and 608.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1409.68 ms. Allocated memory is still 675.8 MB. Free memory was 608.9 MB in the beginning and 458.2 MB in the end (delta: 150.7 MB). Peak memory consumption was 150.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * i and consists of 4 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 14 SDslu, 0 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax190 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq145 hnf94 smp100 dnf100 smp100 tf110 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60799c66=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 0 [L10] COND FALSE !(i != -5) Loop: [L9] COND TRUE i < 0 [L10] COND FALSE !(i != -5) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 11:41:05.026 ----------------------------------------------- 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_COLUNm/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:41:11.167 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check