NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 07:38:41,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 07:38:41,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 07:38:41,127 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 07:38:41,127 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 07:38:41,128 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 07:38:41,129 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 07:38:41,131 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 07:38:41,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 07:38:41,133 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 07:38:41,134 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 07:38:41,135 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 07:38:41,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 07:38:41,136 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 07:38:41,137 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 07:38:41,138 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 07:38:41,139 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 07:38:41,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 07:38:41,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 07:38:41,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 07:38:41,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 07:38:41,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 07:38:41,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 07:38:41,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 07:38:41,149 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 07:38:41,150 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 07:38:41,150 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 07:38:41,151 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 07:38:41,151 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 07:38:41,152 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 07:38:41,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 07:38:41,153 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 07:38:41,154 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 07:38:41,154 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 07:38:41,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 07:38:41,155 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 07:38:41,155 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 07:38:41,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 07:38:41,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 07:38:41,157 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 07:38:41,172 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 07:38:41,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 07:38:41,173 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 07:38:41,173 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 07:38:41,173 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 07:38:41,174 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:38:41,174 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 07:38:41,174 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 07:38:41,174 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 07:38:41,174 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 07:38:41,174 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 07:38:41,175 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 07:38:41,175 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 07:38:41,175 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 07:38:41,175 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:38:41,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 07:38:41,175 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 07:38:41,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 07:38:41,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 07:38:41,176 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 07:38:41,176 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 07:38:41,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 07:38:41,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 07:38:41,177 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 07:38:41,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 07:38:41,177 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 07:38:41,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 07:38:41,177 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 07:38:41,177 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 07:38:41,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 07:38:41,217 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 07:38:41,221 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 07:38:41,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 07:38:41,222 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 07:38:41,223 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 07:38:41,293 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/385a0eb90689442c83109576eecaf27e/FLAG20fc92d67 [2020-06-22 07:38:41,632 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 07:38:41,633 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 07:38:41,639 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/385a0eb90689442c83109576eecaf27e/FLAG20fc92d67 [2020-06-22 07:38:42,050 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/385a0eb90689442c83109576eecaf27e [2020-06-22 07:38:42,062 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 07:38:42,063 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 07:38:42,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 07:38:42,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 07:38:42,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 07:38:42,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48af0bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 07:38:42,096 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 07:38:42,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:38:42,253 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 07:38:42,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:38:42,333 INFO L195 MainTranslator]: Completed translation [2020-06-22 07:38:42,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42 WrapperNode [2020-06-22 07:38:42,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 07:38:42,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 07:38:42,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 07:38:42,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 07:38:42,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 07:38:42,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 07:38:42,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 07:38:42,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 07:38:42,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 07:38:42,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 07:38:42,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 07:38:42,388 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 07:38:42,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 [2020-06-22 07:38:42,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 07:38:42,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 07:38:42,579 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 07:38:42,579 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 07:38:42,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:42 BoogieIcfgContainer [2020-06-22 07:38:42,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 07:38:42,581 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 07:38:42,581 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 07:38:42,583 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 07:38:42,584 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:42" (1/1) ... [2020-06-22 07:38:42,599 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 07:38:42,601 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 07:38:42,602 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 07:38:42,602 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 07:38:42,603 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:38:42,604 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 07:38:42,605 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 07:38:42,606 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 07:38:42,624 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 07:38:42,637 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 07:38:42,641 INFO L70 emoveInfeasibleEdges]: Removed 5 edges and 4 locations because of local infeasibility [2020-06-22 07:38:42,643 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:38:42,645 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 07:38:42,646 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 07:38:42,648 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 07:38:42,648 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:38:42,648 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 07:38:42,648 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 07:38:42,649 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-06-22 07:38:42,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:38:42 BasicIcfg [2020-06-22 07:38:42,649 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 07:38:42,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 07:38:42,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 07:38:42,653 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 07:38:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 07:38:42" (1/4) ... [2020-06-22 07:38:42,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100b2f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (2/4) ... [2020-06-22 07:38:42,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100b2f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:42" (3/4) ... [2020-06-22 07:38:42,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100b2f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:38:42" (4/4) ... [2020-06-22 07:38:42,657 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 07:38:42,667 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 07:38:42,675 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 07:38:42,692 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 07:38:42,721 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 07:38:42,722 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 07:38:42,722 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 07:38:42,722 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 07:38:42,722 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 07:38:42,722 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 07:38:42,722 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 07:38:42,723 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 07:38:42,723 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 07:38:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-06-22 07:38:42,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 07:38:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-06-22 07:38:42,795 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 07:38:42,795 INFO L451 ceAbstractionStarter]: At program point L13-1(lines 9 16) the Hoare annotation is: true [2020-06-22 07:38:42,795 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-06-22 07:38:42,795 INFO L448 ceAbstractionStarter]: For program point L10-2(lines 9 16) no Hoare annotation was computed. [2020-06-22 07:38:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:38:42 BasicIcfg [2020-06-22 07:38:42,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 07:38:42,805 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 07:38:42,805 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 07:38:42,808 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 07:38:42,809 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:38:42,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 07:38:42" (1/5) ... [2020-06-22 07:38:42,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dbc4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,810 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:38:42,810 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:38:42" (2/5) ... [2020-06-22 07:38:42,811 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dbc4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,811 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:38:42,811 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:42" (3/5) ... [2020-06-22 07:38:42,812 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dbc4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,812 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:38:42,812 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:38:42" (4/5) ... [2020-06-22 07:38:42,812 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dbc4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:38:42, skipping insertion in model container [2020-06-22 07:38:42,812 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:38:42,813 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:38:42" (5/5) ... [2020-06-22 07:38:42,814 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 07:38:42,840 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 07:38:42,840 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 07:38:42,840 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 07:38:42,840 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 07:38:42,840 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 07:38:42,841 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 07:38:42,841 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 07:38:42,841 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 07:38:42,841 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 07:38:42,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-22 07:38:42,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 07:38:42,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:38:42,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:38:42,867 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 07:38:42,867 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:38:42,867 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 07:38:42,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-22 07:38:42,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 07:38:42,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:38:42,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:38:42,869 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 07:38:42,869 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:38:42,874 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L13-1true [2020-06-22 07:38:42,874 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true [44] L13-1-->L10: Formula: (< 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 3#L10true [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_11) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 6#L10-2true [38] L10-2-->L13-1: Formula: (and (< v_ULTIMATE.start_main_~i~0_7 0) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) 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_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L13-1true [2020-06-22 07:38:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2020-06-22 07:38:42,882 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:42,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:42,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:42,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 73415, now seen corresponding path program 1 times [2020-06-22 07:38:42,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:42,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:42,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:42,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1920457, now seen corresponding path program 1 times [2020-06-22 07:38:42,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:42,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:42,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:42,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,029 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 07:38:43,031 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 07:38:43,031 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 07:38:43,031 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 07:38:43,031 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 07:38:43,031 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:38:43,032 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 07:38:43,032 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 07:38:43,032 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 07:38:43,032 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 07:38:43,032 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 07:38:43,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,169 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 07:38:43,170 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 [2020-06-22 07:38:43,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 07:38:43,185 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 07:38:43,218 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 07:38:43,219 INFO L448 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/sandbox2/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 [2020-06-22 07:38:43,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 07:38:43,229 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 07:38:43,256 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 07:38:43,256 INFO L448 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/sandbox2/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 [2020-06-22 07:38:43,261 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 07:38:43,261 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 [2020-06-22 07:38:43,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 07:38:43,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 07:38:43,325 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 07:38:43,327 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 07:38:43,327 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 07:38:43,327 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 07:38:43,327 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 07:38:43,328 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 07:38:43,328 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 07:38:43,328 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 07:38:43,328 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 07:38:43,328 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 07:38:43,328 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 07:38:43,328 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 07:38:43,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:38:43,409 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 07:38:43,415 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 07:38:43,417 INFO L122 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 [2020-06-22 07:38:43,418 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 07:38:43,418 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 07:38:43,419 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 07:38:43,419 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 07:38:43,425 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 07:38:43,425 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 07:38:43,435 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 07:38:43,435 INFO L122 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 [2020-06-22 07:38:43,436 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 07:38:43,436 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 07:38:43,437 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 07:38:43,437 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 07:38:43,439 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 07:38:43,440 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 07:38:43,448 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 07:38:43,449 INFO L122 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 [2020-06-22 07:38:43,450 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 07:38:43,450 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 07:38:43,451 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 07:38:43,451 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 07:38:43,451 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 07:38:43,451 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 07:38:43,452 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 07:38:43,453 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 07:38:43,454 INFO L122 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 [2020-06-22 07:38:43,454 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 07:38:43,455 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 07:38:43,455 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 07:38:43,455 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 07:38:43,455 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 07:38:43,456 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 07:38:43,456 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 07:38:43,462 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 07:38:43,466 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 07:38:43,467 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 07:38:43,469 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 07:38:43,469 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 07:38:43,469 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 07:38:43,470 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-06-22 07:38:43,471 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 07:38:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:38:43,519 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 07:38:43,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:38:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:38:43,531 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 07:38:43,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:38:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:38:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:38:43,585 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 07:38:43,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:38:43,627 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-06-22 07:38:43,632 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 [2020-06-22 07:38:43,634 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-06-22 07:38:43,737 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 18 states and 35 transitions. Complement of second has 8 states. [2020-06-22 07:38:43,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-06-22 07:38:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 07:38:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2020-06-22 07:38:43,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 1 letters. Loop has 3 letters. [2020-06-22 07:38:43,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:38:43,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 4 letters. Loop has 3 letters. [2020-06-22 07:38:43,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:38:43,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 1 letters. Loop has 6 letters. [2020-06-22 07:38:43,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:38:43,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 35 transitions. [2020-06-22 07:38:43,752 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-22 07:38:43,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 15 states and 28 transitions. [2020-06-22 07:38:43,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-06-22 07:38:43,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-06-22 07:38:43,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 28 transitions. [2020-06-22 07:38:43,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 07:38:43,760 INFO L706 BuchiCegarLoop]: Abstraction has 15 states and 28 transitions. [2020-06-22 07:38:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 28 transitions. [2020-06-22 07:38:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-06-22 07:38:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-06-22 07:38:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 26 transitions. [2020-06-22 07:38:43,792 INFO L729 BuchiCegarLoop]: Abstraction has 13 states and 26 transitions. [2020-06-22 07:38:43,792 INFO L609 BuchiCegarLoop]: Abstraction has 13 states and 26 transitions. [2020-06-22 07:38:43,792 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 07:38:43,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 26 transitions. [2020-06-22 07:38:43,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-22 07:38:43,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:38:43,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:38:43,794 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 07:38:43,794 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:38:43,794 INFO L794 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 81#L13-1 [45] L13-1-->L10: Formula: (> 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 87#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_11) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 77#L10-2 [2020-06-22 07:38:43,794 INFO L796 eck$LassoCheckResult]: Loop: 77#L10-2 [43] L10-2-->L13-1: Formula: (>= v_ULTIMATE.start_main_~i~0_8 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 82#L13-1 [44] L13-1-->L10: Formula: (< 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 76#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_11) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 77#L10-2 [2020-06-22 07:38:43,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,795 INFO L82 PathProgramCache]: Analyzing trace with hash 61980, now seen corresponding path program 1 times [2020-06-22 07:38:43,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:43,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash 72520, now seen corresponding path program 1 times [2020-06-22 07:38:43,803 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:43,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1846488909, now seen corresponding path program 1 times [2020-06-22 07:38:43,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:43,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:38:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:38:43,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 07:38:43,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 07:38:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 07:38:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 07:38:43,866 INFO L87 Difference]: Start difference. First operand 13 states and 26 transitions. cyclomatic complexity: 16 Second operand 3 states. [2020-06-22 07:38:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 07:38:43,884 INFO L93 Difference]: Finished difference Result 24 states and 42 transitions. [2020-06-22 07:38:43,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 07:38:43,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 42 transitions. [2020-06-22 07:38:43,888 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-06-22 07:38:43,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 42 transitions. [2020-06-22 07:38:43,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-06-22 07:38:43,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-06-22 07:38:43,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 42 transitions. [2020-06-22 07:38:43,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 07:38:43,890 INFO L706 BuchiCegarLoop]: Abstraction has 24 states and 42 transitions. [2020-06-22 07:38:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 42 transitions. [2020-06-22 07:38:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-06-22 07:38:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-06-22 07:38:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 42 transitions. [2020-06-22 07:38:43,894 INFO L729 BuchiCegarLoop]: Abstraction has 24 states and 42 transitions. [2020-06-22 07:38:43,894 INFO L609 BuchiCegarLoop]: Abstraction has 24 states and 42 transitions. [2020-06-22 07:38:43,894 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 07:38:43,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 42 transitions. [2020-06-22 07:38:43,895 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-06-22 07:38:43,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:38:43,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:38:43,896 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 07:38:43,896 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:38:43,896 INFO L794 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 126#L13-1 [44] L13-1-->L10: Formula: (< 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 135#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_11) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 143#L10-2 [2020-06-22 07:38:43,897 INFO L796 eck$LassoCheckResult]: Loop: 143#L10-2 [43] L10-2-->L13-1: Formula: (>= v_ULTIMATE.start_main_~i~0_8 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 141#L13-1 [44] L13-1-->L10: Formula: (< 0 v_rep~unnamed0~0~true_1) InVars {v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} OutVars{v_rep~unnamed0~0~true_1=v_rep~unnamed0~0~true_1} AuxVars[] AssignedVars[] 142#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_11) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[] 143#L10-2 [2020-06-22 07:38:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,897 INFO L82 PathProgramCache]: Analyzing trace with hash 61949, now seen corresponding path program 1 times [2020-06-22 07:38:43,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,903 INFO L82 PathProgramCache]: Analyzing trace with hash 72520, now seen corresponding path program 2 times [2020-06-22 07:38:43,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:38:43,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:38:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1845565388, now seen corresponding path program 1 times [2020-06-22 07:38:43,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:38:43,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:38:43,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 07:38:43,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:38:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:38:43,952 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] [2020-06-22 07:38:43,953 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] [2020-06-22 07:38:43,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:38:43 BasicIcfg [2020-06-22 07:38:43,966 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 07:38:43,966 INFO L168 Benchmark]: Toolchain (without parser) took 1903.94 ms. Allocated memory was 514.9 MB in the beginning and 559.9 MB in the end (delta: 45.1 MB). Free memory was 439.9 MB in the beginning and 399.7 MB in the end (delta: 40.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,968 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 460.1 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 07:38:43,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.93 ms. Allocated memory was 514.9 MB in the beginning and 559.9 MB in the end (delta: 45.1 MB). Free memory was 439.9 MB in the beginning and 529.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.57 ms. Allocated memory is still 559.9 MB. Free memory was 529.8 MB in the beginning and 528.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,983 INFO L168 Benchmark]: Boogie Preprocessor took 18.75 ms. Allocated memory is still 559.9 MB. Free memory was 528.4 MB in the beginning and 526.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,984 INFO L168 Benchmark]: RCFGBuilder took 193.22 ms. Allocated memory is still 559.9 MB. Free memory was 526.2 MB in the beginning and 515.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,984 INFO L168 Benchmark]: BlockEncodingV2 took 68.23 ms. Allocated memory is still 559.9 MB. Free memory was 515.5 MB in the beginning and 510.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,986 INFO L168 Benchmark]: TraceAbstraction took 154.14 ms. Allocated memory is still 559.9 MB. Free memory was 510.7 MB in the beginning and 501.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,987 INFO L168 Benchmark]: BuchiAutomizer took 1160.81 ms. Allocated memory is still 559.9 MB. Free memory was 501.9 MB in the beginning and 399.7 MB in the end (delta: 102.2 MB). Peak memory consumption was 102.2 MB. Max. memory is 50.3 GB. [2020-06-22 07:38:43,991 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 7 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 460.1 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 269.93 ms. Allocated memory was 514.9 MB in the beginning and 559.9 MB in the end (delta: 45.1 MB). Free memory was 439.9 MB in the beginning and 529.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.57 ms. Allocated memory is still 559.9 MB. Free memory was 529.8 MB in the beginning and 528.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.75 ms. Allocated memory is still 559.9 MB. Free memory was 528.4 MB in the beginning and 526.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * RCFGBuilder took 193.22 ms. Allocated memory is still 559.9 MB. Free memory was 526.2 MB in the beginning and 515.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 68.23 ms. Allocated memory is still 559.9 MB. Free memory was 515.5 MB in the beginning and 510.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 154.14 ms. Allocated memory is still 559.9 MB. Free memory was 510.7 MB in the beginning and 501.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1160.81 ms. Allocated memory is still 559.9 MB. Free memory was 501.9 MB in the beginning and 399.7 MB in the end (delta: 102.2 MB). Peak memory consumption was 102.2 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier2,QUANTIFIED] * 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, 4 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 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 (1 trivial, 0 deterministic, 1 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 6 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 2. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 16 SDslu, 19 SDs, 0 SdLazy, 51 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. [2020-06-22 07:38:44,001 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier3,QUANTIFIED] [2020-06-22 07:38:44,001 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier4,QUANTIFIED] [2020-06-22 07:38:44,002 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier5,QUANTIFIED] [2020-06-22 07:38:44,002 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[freshIdentifier6,QUANTIFIED] Nontermination argument in form of an infinite execution State at position 0 is {freshIdentifier5=1} State at position 1 is {freshIdentifier6=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f3e9336=0, \result=0, i=0} - 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 \read(true) [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 07:38:38.780 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 07:38:44.229 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check