YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 06:07:10,026 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 06:07:10,028 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 06:07:10,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 06:07:10,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 06:07:10,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 06:07:10,043 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 06:07:10,044 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 06:07:10,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 06:07:10,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 06:07:10,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 06:07:10,048 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 06:07:10,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 06:07:10,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 06:07:10,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 06:07:10,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 06:07:10,052 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 06:07:10,054 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 06:07:10,056 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 06:07:10,057 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 06:07:10,058 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 06:07:10,059 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 06:07:10,062 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 06:07:10,062 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 06:07:10,062 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 06:07:10,063 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 06:07:10,063 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 06:07:10,064 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 06:07:10,065 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 06:07:10,065 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 06:07:10,066 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 06:07:10,067 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 06:07:10,068 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 06:07:10,068 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 06:07:10,069 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 06:07:10,069 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 06:07:10,069 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 06:07:10,070 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 06:07:10,071 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 06:07:10,071 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 06:07:10,086 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 06:07:10,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 06:07:10,087 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 06:07:10,087 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 06:07:10,087 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 06:07:10,087 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 06:07:10,087 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 06:07:10,088 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 06:07:10,088 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 06:07:10,088 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 06:07:10,088 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 06:07:10,088 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 06:07:10,088 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:10,089 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 06:07:10,089 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 06:07:10,090 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 06:07:10,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 06:07:10,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 06:07:10,090 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 06:07:10,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 06:07:10,090 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 06:07:10,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 06:07:10,091 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 06:07:10,091 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 06:07:10,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 06:07:10,130 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 06:07:10,133 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 06:07:10,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 06:07:10,135 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 06:07:10,136 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 06:07:10,204 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/4cbac1fb075a4baf97cf5fabad993973/FLAG80f6f830a [2020-06-22 06:07:10,548 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 06:07:10,548 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 06:07:10,556 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/4cbac1fb075a4baf97cf5fabad993973/FLAG80f6f830a [2020-06-22 06:07:10,967 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/4cbac1fb075a4baf97cf5fabad993973 [2020-06-22 06:07:10,979 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 06:07:10,981 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 06:07:10,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 06:07:10,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 06:07:10,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 06:07:10,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 06:07:10" (1/1) ... [2020-06-22 06:07:10,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ded17af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:10, skipping insertion in model container [2020-06-22 06:07:10,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 06:07:10" (1/1) ... [2020-06-22 06:07:10,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 06:07:11,016 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 06:07:11,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 06:07:11,182 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 06:07:11,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 06:07:11,281 INFO L195 MainTranslator]: Completed translation [2020-06-22 06:07:11,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11 WrapperNode [2020-06-22 06:07:11,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 06:07:11,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 06:07:11,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 06:07:11,283 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 06:07:11,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 06:07:11,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 06:07:11,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 06:07:11,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 06:07:11,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 06:07:11,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 06:07:11,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 06:07:11,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 06:07:11,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (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 [2020-06-22 06:07:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-06-22 06:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-06-22 06:07:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 06:07:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 06:07:11,592 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 06:07:11,592 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 06:07:11,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:07:11 BoogieIcfgContainer [2020-06-22 06:07:11,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 06:07:11,595 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 06:07:11,595 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 06:07:11,598 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 06:07:11,599 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:07:11" (1/1) ... [2020-06-22 06:07:11,617 INFO L313 BlockEncoder]: Initial Icfg 16 locations, 22 edges [2020-06-22 06:07:11,619 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 06:07:11,620 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 06:07:11,621 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 06:07:11,621 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 06:07:11,623 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 06:07:11,624 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 06:07:11,625 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 06:07:11,642 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 06:07:11,657 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 06:07:11,662 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 06:07:11,664 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 06:07:11,673 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 06:07:11,675 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-22 06:07:11,677 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 06:07:11,677 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 06:07:11,679 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 06:07:11,680 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 06:07:11,680 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 06:07:11,680 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 06:07:11,681 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 06:07:11,681 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 06:07:11,682 INFO L313 BlockEncoder]: Encoded RCFG 11 locations, 15 edges [2020-06-22 06:07:11,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 06:07:11 BasicIcfg [2020-06-22 06:07:11,682 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 06:07:11,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 06:07:11,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 06:07:11,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 06:07:11,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 06:07:10" (1/4) ... [2020-06-22 06:07:11,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53823bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (2/4) ... [2020-06-22 06:07:11,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53823bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:07:11" (3/4) ... [2020-06-22 06:07:11,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53823bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 06:07:11" (4/4) ... [2020-06-22 06:07:11,691 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 06:07:11,710 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 06:07:11,719 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 06:07:11,740 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 06:07:11,770 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 06:07:11,771 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 06:07:11,771 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 06:07:11,771 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 06:07:11,771 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 06:07:11,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 06:07:11,772 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 06:07:11,772 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 06:07:11,772 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 06:07:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-06-22 06:07:11,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 06:07:11,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-06-22 06:07:11,866 INFO L451 ceAbstractionStarter]: At program point recENTRY(lines 4 14) the Hoare annotation is: true [2020-06-22 06:07:11,866 INFO L448 ceAbstractionStarter]: For program point recFINAL(lines 4 14) no Hoare annotation was computed. [2020-06-22 06:07:11,866 INFO L451 ceAbstractionStarter]: At program point L8(line 8) the Hoare annotation is: true [2020-06-22 06:07:11,866 INFO L448 ceAbstractionStarter]: For program point recEXIT(lines 4 14) no Hoare annotation was computed. [2020-06-22 06:07:11,867 INFO L451 ceAbstractionStarter]: At program point L10-2(lines 10 11) the Hoare annotation is: true [2020-06-22 06:07:11,867 INFO L448 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-06-22 06:07:11,867 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 13) no Hoare annotation was computed. [2020-06-22 06:07:11,867 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 06:07:11,867 INFO L451 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: true [2020-06-22 06:07:11,867 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-06-22 06:07:11,868 INFO L451 ceAbstractionStarter]: At program point L21-2(lines 21 22) the Hoare annotation is: true [2020-06-22 06:07:11,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:07:11 BasicIcfg [2020-06-22 06:07:11,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 06:07:11,878 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 06:07:11,878 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 06:07:11,881 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 06:07:11,882 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 06:07:11,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 06:07:10" (1/5) ... [2020-06-22 06:07:11,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e903ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,883 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 06:07:11,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 06:07:11" (2/5) ... [2020-06-22 06:07:11,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e903ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,883 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 06:07:11,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:07:11" (3/5) ... [2020-06-22 06:07:11,884 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e903ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,884 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 06:07:11,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 06:07:11" (4/5) ... [2020-06-22 06:07:11,885 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e903ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 06:07:11, skipping insertion in model container [2020-06-22 06:07:11,885 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 06:07:11,885 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:07:11" (5/5) ... [2020-06-22 06:07:11,886 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 06:07:11,915 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 06:07:11,915 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 06:07:11,915 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 06:07:11,915 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 06:07:11,915 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 06:07:11,915 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 06:07:11,916 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 06:07:11,916 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 06:07:11,916 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 06:07:11,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-06-22 06:07:11,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-06-22 06:07:11,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:11,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:11,950 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 06:07:11,951 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 06:07:11,951 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 06:07:11,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-06-22 06:07:11,952 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-06-22 06:07:11,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:11,953 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:11,953 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 06:07:11,953 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 06:07:11,959 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 13#L20true [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 3#recENTRYtrue [2020-06-22 06:07:11,959 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 10#L5true [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 5#L8true [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 3#recENTRYtrue [2020-06-22 06:07:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:11,965 INFO L82 PathProgramCache]: Analyzing trace with hash 3437, now seen corresponding path program 1 times [2020-06-22 06:07:11,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:11,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:11,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:11,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:11,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:12,039 INFO L82 PathProgramCache]: Analyzing trace with hash 78273, now seen corresponding path program 1 times [2020-06-22 06:07:12,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:12,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:12,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:12,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:12,050 INFO L82 PathProgramCache]: Analyzing trace with hash 102440149, now seen corresponding path program 1 times [2020-06-22 06:07:12,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:12,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:12,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:12,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:12,125 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:12,126 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:12,126 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:12,127 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:12,127 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 06:07:12,127 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,127 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:12,127 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:12,127 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 06:07:12,128 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:12,128 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:12,148 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 06:07:12,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 06:07:12,160 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 06:07:12,163 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 06:07:12,166 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 06:07:12,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 06:07:12,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 06:07:12,244 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:12,244 INFO L412 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 [2020-06-22 06:07:12,255 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,256 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:12,265 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:12,266 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,301 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,302 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:12,306 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:12,306 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,338 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,338 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:12,343 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:12,343 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-06-22 06:07:12,372 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,372 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,377 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:12,377 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,408 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,408 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:12,412 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:12,412 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=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 [2020-06-22 06:07:12,443 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:12,443 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:12,479 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 06:07:12,479 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:12,512 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 06:07:12,515 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:12,515 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:12,515 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:12,515 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:12,515 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 06:07:12,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 06:07:12,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:12,516 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:12,516 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 06:07:12,516 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:12,516 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:12,518 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 06:07:12,521 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 06:07:12,524 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 06:07:12,526 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 06:07:12,529 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 06:07:12,538 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 06:07:12,540 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 06:07:12,584 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:12,590 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 06:07:12,592 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 06:07:12,593 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:12,593 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:12,594 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:12,594 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:12,594 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:12,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:12,596 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:12,600 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 06:07:12,601 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 06:07:12,602 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:12,602 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:12,602 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:12,602 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:12,602 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:12,603 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:12,603 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:12,605 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 06:07:12,605 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 06:07:12,606 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:12,606 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:12,606 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:12,606 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:12,606 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:12,607 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:12,607 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:12,609 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 06:07:12,609 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 06:07:12,610 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:12,610 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:12,610 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:12,610 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:12,610 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:12,611 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:12,611 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:12,612 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 06:07:12,613 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 06:07:12,613 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:12,614 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:12,614 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:12,614 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:12,614 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:12,615 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:12,615 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:12,620 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 06:07:12,625 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 06:07:12,625 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 06:07:12,627 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 06:07:12,627 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 06:07:12,627 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 06:07:12,628 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [] [2020-06-22 06:07:12,629 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 06:07:12,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:12,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 06:07:12,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 06:07:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:12,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-22 06:07:12,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 06:07:12,741 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 06:07:12,764 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 06:07:12,770 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-22 06:07:12,771 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 11 states. Second operand 4 states. [2020-06-22 06:07:12,893 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 11 states.. Second operand 4 states. Result 66 states and 101 transitions. Complement of second has 24 states. [2020-06-22 06:07:12,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-06-22 06:07:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 06:07:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 30 transitions. [2020-06-22 06:07:12,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2020-06-22 06:07:12,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:12,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2020-06-22 06:07:12,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:12,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2020-06-22 06:07:12,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:12,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 101 transitions. [2020-06-22 06:07:12,920 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 8 [2020-06-22 06:07:12,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 45 states and 74 transitions. [2020-06-22 06:07:12,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-06-22 06:07:12,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-06-22 06:07:12,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 74 transitions. [2020-06-22 06:07:12,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 06:07:12,932 INFO L706 BuchiCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-06-22 06:07:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 74 transitions. [2020-06-22 06:07:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-06-22 06:07:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-06-22 06:07:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2020-06-22 06:07:12,974 INFO L729 BuchiCegarLoop]: Abstraction has 37 states and 56 transitions. [2020-06-22 06:07:12,974 INFO L609 BuchiCegarLoop]: Abstraction has 37 states and 56 transitions. [2020-06-22 06:07:12,975 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 06:07:12,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 56 transitions. [2020-06-22 06:07:12,977 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 8 [2020-06-22 06:07:12,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:12,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:12,977 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-06-22 06:07:12,977 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 06:07:12,978 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 148#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 164#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 167#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 143#L8 [2020-06-22 06:07:12,978 INFO L796 eck$LassoCheckResult]: Loop: 143#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 142#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 144#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 143#L8 [2020-06-22 06:07:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:12,978 INFO L82 PathProgramCache]: Analyzing trace with hash 3304520, now seen corresponding path program 1 times [2020-06-22 06:07:12,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:12,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:12,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:12,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:13,046 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 06:07:13,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 06:07:13,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 06:07:13,051 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-22 06:07:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash 89014, now seen corresponding path program 1 times [2020-06-22 06:07:13,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:13,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:13,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:13,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:13,098 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:13,098 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:13,098 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:13,098 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:13,098 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 06:07:13,099 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,099 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:13,099 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:13,099 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 06:07:13,099 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:13,099 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:13,100 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 06:07:13,112 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 06:07:13,114 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 06:07:13,117 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 06:07:13,119 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 06:07:13,122 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 06:07:13,164 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:13,164 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,173 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 06:07:13,211 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,387 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,388 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=-8, rec_#in~a=0} Honda state: {rec_~a=-8, rec_#in~a=0} Generalized eigenvectors: [{rec_~a=-1, rec_#in~a=-2}, {rec_~a=0, rec_#in~a=1}, {rec_~a=0, rec_#in~a=-8}] Lambdas: [1, 8, 0] Nus: [1, 1] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,420 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,423 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,424 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,457 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,458 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,462 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,462 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,493 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,493 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,497 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,498 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,532 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,532 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,563 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,564 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,567 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,567 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-22 06:07:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 06:07:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-22 06:07:13,598 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. cyclomatic complexity: 26 Second operand 5 states. [2020-06-22 06:07:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 06:07:13,655 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-06-22 06:07:13,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-06-22 06:07:13,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2020-06-22 06:07:13,660 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 10 [2020-06-22 06:07:13,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 46 states and 68 transitions. [2020-06-22 06:07:13,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2020-06-22 06:07:13,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2020-06-22 06:07:13,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 68 transitions. [2020-06-22 06:07:13,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 06:07:13,663 INFO L706 BuchiCegarLoop]: Abstraction has 46 states and 68 transitions. [2020-06-22 06:07:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 68 transitions. [2020-06-22 06:07:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-06-22 06:07:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-06-22 06:07:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2020-06-22 06:07:13,670 INFO L729 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-06-22 06:07:13,670 INFO L609 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-06-22 06:07:13,670 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 06:07:13,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2020-06-22 06:07:13,672 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 9 [2020-06-22 06:07:13,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:13,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:13,673 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-06-22 06:07:13,673 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 06:07:13,673 INFO L794 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 237#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 236#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 238#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 244#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 247#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 255#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 242#L8 [2020-06-22 06:07:13,674 INFO L796 eck$LassoCheckResult]: Loop: 242#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 246#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 260#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 242#L8 [2020-06-22 06:07:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash -339263056, now seen corresponding path program 1 times [2020-06-22 06:07:13,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:13,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 06:07:13,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 06:07:13,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 06:07:13,704 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-22 06:07:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:13,705 INFO L82 PathProgramCache]: Analyzing trace with hash 89014, now seen corresponding path program 2 times [2020-06-22 06:07:13,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:13,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:13,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:13,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:13,748 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:13,749 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:13,749 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:13,749 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:13,749 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 06:07:13,749 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,749 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:13,749 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:13,749 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 06:07:13,750 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:13,750 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:13,751 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 06:07:13,753 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 06:07:13,755 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 06:07:13,763 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 06:07:13,766 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 06:07:13,768 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 06:07:13,811 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:13,811 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,822 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,822 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,827 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,827 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,861 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,862 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:13,865 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:13,866 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,897 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:13,897 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:13,934 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 06:07:13,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:16,999 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:16,999 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=-7, rec_#in~a=3} Honda state: {rec_~a=-7, rec_#in~a=3} Generalized eigenvectors: [{rec_~a=0, rec_#in~a=-2}, {rec_~a=-1, rec_#in~a=-1}, {rec_~a=0, rec_#in~a=-8}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:17,029 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:17,034 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:17,034 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,080 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:17,080 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:17,087 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:17,087 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,139 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:17,139 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:17,144 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 06:07:17,145 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-22 06:07:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 06:07:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-06-22 06:07:17,186 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 27 Second operand 5 states. [2020-06-22 06:07:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 06:07:17,252 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-06-22 06:07:17,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-06-22 06:07:17,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-06-22 06:07:17,256 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2020-06-22 06:07:17,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 26 transitions. [2020-06-22 06:07:17,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-06-22 06:07:17,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-06-22 06:07:17,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2020-06-22 06:07:17,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 06:07:17,258 INFO L706 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-06-22 06:07:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2020-06-22 06:07:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-06-22 06:07:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-06-22 06:07:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-06-22 06:07:17,261 INFO L729 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-06-22 06:07:17,261 INFO L609 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-06-22 06:07:17,261 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 06:07:17,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2020-06-22 06:07:17,262 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2020-06-22 06:07:17,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:17,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:17,264 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 06:07:17,264 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 06:07:17,265 INFO L794 eck$LassoCheckResult]: Stem: 320#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 311#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 310#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 312#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 314#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 313#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 317#L5 [52] L5-->recFINAL: Formula: (and (= 0 v_rec_~a_2) (= |v_rec_#res_1| 0)) InVars {rec_~a=v_rec_~a_2} OutVars{rec_~a=v_rec_~a_2, rec_#res=|v_rec_#res_1|} AuxVars[] AssignedVars[rec_#res] 319#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 322#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 323#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 328#L10-2 [2020-06-22 06:07:17,265 INFO L796 eck$LassoCheckResult]: Loop: 328#L10-2 [63] L10-2-->L10-2: Formula: (and (< 0 v_rec_~rescopy~0_4) (= v_rec_~rescopy~0_4 (+ v_rec_~rescopy~0_3 1))) InVars {rec_~rescopy~0=v_rec_~rescopy~0_4} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_3, rec_#t~post1=|v_rec_#t~post1_1|} AuxVars[] AssignedVars[rec_~rescopy~0, rec_#t~post1] 328#L10-2 [2020-06-22 06:07:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,265 INFO L82 PathProgramCache]: Analyzing trace with hash -928273403, now seen corresponding path program 1 times [2020-06-22 06:07:17,265 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 06:07:17,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 94, now seen corresponding path program 1 times [2020-06-22 06:07:17,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:17,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1288295642, now seen corresponding path program 1 times [2020-06-22 06:07:17,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:17,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-06-22 06:07:17,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 06:07:17,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 06:07:17,351 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:17,352 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:17,352 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:17,352 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:17,352 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 06:07:17,352 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,352 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:17,352 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:17,353 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 06:07:17,353 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:17,353 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:17,354 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 06:07:17,361 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 06:07:17,384 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:17,384 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,391 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 06:07:17,391 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 06:07:17,423 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 06:07:17,423 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 06:07:17,453 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 06:07:17,455 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 06:07:17,455 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 06:07:17,455 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 06:07:17,455 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 06:07:17,456 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 06:07:17,456 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 06:07:17,456 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 06:07:17,456 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 06:07:17,456 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 06:07:17,456 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 06:07:17,456 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 06:07:17,457 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 06:07:17,465 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 06:07:17,486 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 06:07:17,486 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 06:07:17,487 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 06:07:17,487 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 06:07:17,488 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 06:07:17,488 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 06:07:17,488 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 06:07:17,488 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 06:07:17,489 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 06:07:17,489 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 06:07:17,494 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 06:07:17,497 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 06:07:17,497 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 06:07:17,497 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 06:07:17,497 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 06:07:17,498 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 06:07:17,498 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2020-06-22 06:07:17,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 06:07:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:17,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 06:07:17,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 06:07:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:17,568 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 06:07:17,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 06:07:17,569 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 06:07:17,593 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 06:07:17,593 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2020-06-22 06:07:17,593 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 19 states and 23 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-06-22 06:07:17,657 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 19 states and 23 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 27 states and 36 transitions. Complement of second has 9 states. [2020-06-22 06:07:17,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 06:07:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 06:07:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-06-22 06:07:17,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 1 letters. [2020-06-22 06:07:17,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:17,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 1 letters. [2020-06-22 06:07:17,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:17,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 2 letters. [2020-06-22 06:07:17,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 06:07:17,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2020-06-22 06:07:17,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 06:07:17,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2020-06-22 06:07:17,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-06-22 06:07:17,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-06-22 06:07:17,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-06-22 06:07:17,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 06:07:17,664 INFO L706 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-06-22 06:07:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-06-22 06:07:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-06-22 06:07:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-06-22 06:07:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2020-06-22 06:07:17,666 INFO L729 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-06-22 06:07:17,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 06:07:17,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-22 06:07:17,667 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 5 states. [2020-06-22 06:07:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 06:07:17,691 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-06-22 06:07:17,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-06-22 06:07:17,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-06-22 06:07:17,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 06:07:17,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 34 transitions. [2020-06-22 06:07:17,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-06-22 06:07:17,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-06-22 06:07:17,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-06-22 06:07:17,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 06:07:17,696 INFO L706 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-06-22 06:07:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-06-22 06:07:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-06-22 06:07:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-06-22 06:07:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-06-22 06:07:17,699 INFO L729 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-06-22 06:07:17,699 INFO L609 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-06-22 06:07:17,699 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 06:07:17,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-06-22 06:07:17,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-22 06:07:17,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 06:07:17,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 06:07:17,701 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 06:07:17,701 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-22 06:07:17,702 INFO L794 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 471#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 470#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 472#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 475#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 473#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 477#L5 [52] L5-->recFINAL: Formula: (and (= 0 v_rec_~a_2) (= |v_rec_#res_1| 0)) InVars {rec_~a=v_rec_~a_2} OutVars{rec_~a=v_rec_~a_2, rec_#res=|v_rec_#res_1|} AuxVars[] AssignedVars[rec_#res] 486#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 483#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 484#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 491#L10-2 [77] L10-2-->recFINAL: Formula: (and (<= v_rec_~rescopy~0_5 0) (= |v_rec_#res_3| (+ v_rec_~res~0_3 1))) InVars {rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} OutVars{rec_#res=|v_rec_#res_3|, rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} AuxVars[] AssignedVars[rec_#res] 490#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 489#recEXIT >[69] recEXIT-->L20-1: AOR: Formula: (= |v_ULTIMATE.start_main_#t~ret3_5| |v_rec_#resOutParam_2|) InVars {rec_#res=|v_rec_#resOutParam_2|} OutVars{ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret3] LVA: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a] 487#L20-1 [54] L20-1-->L21-2: Formula: (= v_ULTIMATE.start_main_~res~1_4 |v_ULTIMATE.start_main_#t~ret3_4|) InVars {ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_4|} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_4, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~ret3] 488#L21-2 [2020-06-22 06:07:17,702 INFO L796 eck$LassoCheckResult]: Loop: 488#L21-2 [57] L21-2-->L21-2: Formula: (< v_ULTIMATE.start_main_~res~1_3 1) InVars {ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} AuxVars[] AssignedVars[] 488#L21-2 [2020-06-22 06:07:17,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,702 INFO L82 PathProgramCache]: Analyzing trace with hash -211803541, now seen corresponding path program 1 times [2020-06-22 06:07:17,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:17,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,721 INFO L82 PathProgramCache]: Analyzing trace with hash 88, now seen corresponding path program 1 times [2020-06-22 06:07:17,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:17,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 06:07:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 06:07:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2024024878, now seen corresponding path program 1 times [2020-06-22 06:07:17,725 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 06:07:17,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 06:07:17,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 06:07:17,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 06:07:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 06:07:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-06-22 06:07:17,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 06:07:17,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-06-22 06:07:17,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-06-22 06:07:17,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-06-22 06:07:17,781 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. cyclomatic complexity: 11 Second operand 8 states. [2020-06-22 06:07:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 06:07:17,809 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-06-22 06:07:17,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-06-22 06:07:17,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2020-06-22 06:07:17,812 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 06:07:17,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-06-22 06:07:17,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 06:07:17,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 06:07:17,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 06:07:17,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 06:07:17,812 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 06:07:17,812 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 06:07:17,812 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 06:07:17,813 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 06:07:17,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 06:07:17,813 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 06:07:17,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 06:07:17,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 06:07:17 BasicIcfg [2020-06-22 06:07:17,819 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 06:07:17,820 INFO L168 Benchmark]: Toolchain (without parser) took 6839.83 ms. Allocated memory was 514.9 MB in the beginning and 579.3 MB in the end (delta: 64.5 MB). Free memory was 440.0 MB in the beginning and 376.0 MB in the end (delta: 63.9 MB). Peak memory consumption was 128.4 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,822 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 459.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 06:07:17,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.50 ms. Allocated memory was 514.9 MB in the beginning and 551.6 MB in the end (delta: 36.7 MB). Free memory was 439.4 MB in the beginning and 522.5 MB in the end (delta: -83.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.33 ms. Allocated memory is still 551.6 MB. Free memory was 522.5 MB in the beginning and 520.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,823 INFO L168 Benchmark]: Boogie Preprocessor took 21.41 ms. Allocated memory is still 551.6 MB. Free memory was 520.7 MB in the beginning and 518.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,824 INFO L168 Benchmark]: RCFGBuilder took 252.08 ms. Allocated memory is still 551.6 MB. Free memory was 518.8 MB in the beginning and 506.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,824 INFO L168 Benchmark]: BlockEncodingV2 took 87.39 ms. Allocated memory is still 551.6 MB. Free memory was 506.3 MB in the beginning and 501.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,825 INFO L168 Benchmark]: TraceAbstraction took 194.05 ms. Allocated memory is still 551.6 MB. Free memory was 500.4 MB in the beginning and 490.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,825 INFO L168 Benchmark]: BuchiAutomizer took 5941.52 ms. Allocated memory was 551.6 MB in the beginning and 579.3 MB in the end (delta: 27.8 MB). Free memory was 489.5 MB in the beginning and 376.0 MB in the end (delta: 113.4 MB). Peak memory consumption was 141.2 MB. Max. memory is 50.3 GB. [2020-06-22 06:07:17,829 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 16 locations, 22 edges - StatisticsResult: Encoded RCFG 11 locations, 15 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 459.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 300.50 ms. Allocated memory was 514.9 MB in the beginning and 551.6 MB in the end (delta: 36.7 MB). Free memory was 439.4 MB in the beginning and 522.5 MB in the end (delta: -83.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 37.33 ms. Allocated memory is still 551.6 MB. Free memory was 522.5 MB in the beginning and 520.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 21.41 ms. Allocated memory is still 551.6 MB. Free memory was 520.7 MB in the beginning and 518.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 50.3 GB. * RCFGBuilder took 252.08 ms. Allocated memory is still 551.6 MB. Free memory was 518.8 MB in the beginning and 506.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 87.39 ms. Allocated memory is still 551.6 MB. Free memory was 506.3 MB in the beginning and 501.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 194.05 ms. Allocated memory is still 551.6 MB. Free memory was 500.4 MB in the beginning and 490.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 5941.52 ms. Allocated memory was 551.6 MB in the beginning and 579.3 MB in the end (delta: 27.8 MB). Free memory was 489.5 MB in the beginning and 376.0 MB in the end (delta: 113.4 MB). Peak memory consumption was 141.2 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 0 error locations. SAFE Result, 0.1s 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=11occurred 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, 5 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 5 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function \old(a) and consists of 6 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.9s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 5.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 94 SDtfs, 83 SDslu, 175 SDs, 0 SdLazy, 120 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN2 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 06:07:07.604 ----------------------------------------------- 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 -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 06:07:18.080 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check