/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:32:51,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:32:51,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:32:51,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:32:51,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:32:51,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:32:51,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:32:51,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:32:51,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:32:51,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:32:51,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:32:51,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:32:51,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:32:51,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:32:52,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:32:52,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:32:52,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:32:52,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:32:52,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:32:52,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:32:52,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:32:52,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:32:52,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:32:52,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:32:52,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:32:52,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:32:52,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:32:52,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:32:52,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:32:52,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:32:52,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:32:52,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:32:52,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:32:52,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:32:52,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:32:52,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:32:52,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:32:52,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:32:52,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:32:52,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:32:52,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:32:52,023 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:32:52,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:32:52,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:32:52,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:32:52,039 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:32:52,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:32:52,039 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:32:52,039 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:32:52,039 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:32:52,040 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:32:52,041 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:52,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:32:52,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:32:52,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:32:52,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:32:52,042 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:32:52,042 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:32:52,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:32:52,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:32:52,042 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:32:52,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:32:52,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:32:52,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:32:52,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:32:52,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:32:52,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:32:52,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:32:52,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:32:52,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:32:52,233 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:32:52,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:32:52,300 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_BfRMnL/tmp/56f93e8293eb4408a8233747eaf34e21/FLAG529838cf6 [2020-07-01 12:32:52,629 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:32:52,630 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:32:52,636 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_BfRMnL/tmp/56f93e8293eb4408a8233747eaf34e21/FLAG529838cf6 [2020-07-01 12:32:53,039 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_BfRMnL/tmp/56f93e8293eb4408a8233747eaf34e21 [2020-07-01 12:32:53,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:32:53,052 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:32:53,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:32:53,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:32:53,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:32:53,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51461ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:32:53,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:32:53,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:32:53,317 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:32:53,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:32:53,348 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:32:53,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53 WrapperNode [2020-07-01 12:32:53,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:32:53,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:32:53,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:32:53,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:32:53,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:32:53,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:32:53,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:32:53,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:32:53,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:32:53,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:32:53,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:32:53,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:32:53,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:32:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:32:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:32:53,618 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:32:53,619 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:32:53,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:53 BoogieIcfgContainer [2020-07-01 12:32:53,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:32:53,623 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:32:53,623 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:32:53,625 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:32:53,626 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:53" (1/1) ... [2020-07-01 12:32:53,639 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 12:32:53,640 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:32:53,641 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:32:53,641 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:32:53,642 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:32:53,644 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:32:53,644 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:32:53,645 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:32:53,658 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:32:53,665 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 12:32:53,670 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:32:53,672 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:32:53,689 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:32:53,691 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:32:53,692 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:32:53,692 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:32:53,693 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:32:53,693 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:32:53,693 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 12:32:53,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53 BasicIcfg [2020-07-01 12:32:53,694 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:32:53,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:32:53,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:32:53,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:32:53,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:32:53" (1/4) ... [2020-07-01 12:32:53,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4250879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (2/4) ... [2020-07-01 12:32:53,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4250879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:53" (3/4) ... [2020-07-01 12:32:53,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4250879d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53" (4/4) ... [2020-07-01 12:32:53,703 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:32:53,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:32:53,720 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:32:53,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:32:53,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:32:53,756 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:32:53,757 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:32:53,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:32:53,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:32:53,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:32:53,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:32:53,757 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:32:53,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 12:32:53,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:32:53,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 12:32:53,831 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:32:53,831 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-07-01 12:32:53,831 INFO L271 CegarLoopResult]: At program point L10-2(lines 9 15) the Hoare annotation is: true [2020-07-01 12:32:53,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53 BasicIcfg [2020-07-01 12:32:53,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:32:53,841 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:32:53,841 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:32:53,844 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:32:53,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,845 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:32:53" (1/5) ... [2020-07-01 12:32:53,846 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,846 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,846 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:53" (2/5) ... [2020-07-01 12:32:53,846 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:53" (3/5) ... [2020-07-01 12:32:53,847 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53" (4/5) ... [2020-07-01 12:32:53,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53" (5/5) ... [2020-07-01 12:32:53,850 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:32:53,877 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:32:53,878 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:32:53,878 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:32:53,878 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:32:53,879 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:32:53,879 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:32:53,879 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:32:53,879 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:32:53,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:32:53,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:32:53,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:53,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:53,906 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:32:53,906 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:32:53,906 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:32:53,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:32:53,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:32:53,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:53,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:53,908 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:32:53,908 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:32:53,913 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L10-2true [2020-07-01 12:32:53,913 INFO L796 eck$LassoCheckResult]: Loop: 5#L10-2true [31] L10-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 3#L10true [34] L10-->L10-2: Formula: (and (>= 3 v_ULTIMATE.start_main_~i~0_11) (= v_ULTIMATE.start_main_~i~0_10 (+ v_ULTIMATE.start_main_~i~0_11 (- 1)))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L10-2true [2020-07-01 12:32:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-07-01 12:32:53,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:53,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575521722] [2020-07-01 12:32:53,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,002 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 1 times [2020-07-01 12:32:54,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094154761] [2020-07-01 12:32:54,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,017 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,019 INFO L82 PathProgramCache]: Analyzing trace with hash 55772, now seen corresponding path program 1 times [2020-07-01 12:32:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887530730] [2020-07-01 12:32:54,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,030 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,080 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:54,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:54,081 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:54,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:54,081 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:54,081 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:54,082 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:54,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:32:54,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:54,082 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:54,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,192 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:54,193 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,251 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,251 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,284 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:54,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,328 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:32:54,358 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:54,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:54,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:54,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:54,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:32:54,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:54,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:54,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:54,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:32:54,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:54,360 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:54,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:54,449 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:54,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:32:54,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:54,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:32:54,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:54,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:54,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:54,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:32:54,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:32:54,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:32:54,475 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:32:54,475 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:54,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:32:54,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:32:54,484 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:32:54,485 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 12:32:54,519 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:32:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,612 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:32:54,613 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,624 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:32:54,625 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:32:54,666 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:32:54,671 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 12:32:54,673 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 12:32:54,717 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 6 states. [2020-07-01 12:32:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:32:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:32:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-01 12:32:54,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:32:54,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:32:54,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 12:32:54,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-07-01 12:32:54,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 12:32:54,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-07-01 12:32:54,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 12:32:54,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 12:32:54,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-07-01 12:32:54,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:54,737 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-07-01 12:32:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-07-01 12:32:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-07-01 12:32:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 12:32:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 12:32:54,766 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 12:32:54,766 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 12:32:54,766 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:32:54,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-07-01 12:32:54,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:32:54,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:54,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:54,767 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:32:54,768 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:32:54,768 INFO L794 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 55#L10-2 [31] L10-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 50#L10 [24] L10-->L10-2: Formula: (and (< 3 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 51#L10-2 [2020-07-01 12:32:54,768 INFO L796 eck$LassoCheckResult]: Loop: 51#L10-2 [31] L10-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 56#L10 [34] L10-->L10-2: Formula: (and (>= 3 v_ULTIMATE.start_main_~i~0_11) (= v_ULTIMATE.start_main_~i~0_10 (+ v_ULTIMATE.start_main_~i~0_11 (- 1)))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 51#L10-2 [2020-07-01 12:32:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,769 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 1 times [2020-07-01 12:32:54,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109762799] [2020-07-01 12:32:54,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,780 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 2 times [2020-07-01 12:32:54,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948163033] [2020-07-01 12:32:54,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,788 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,788 INFO L82 PathProgramCache]: Analyzing trace with hash 53588277, now seen corresponding path program 1 times [2020-07-01 12:32:54,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318372908] [2020-07-01 12:32:54,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:32:54,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318372908] [2020-07-01 12:32:54,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:32:54,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:32:54,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3358688] [2020-07-01 12:32:54,847 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:54,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:54,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:54,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:54,847 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:54,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:54,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:54,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:32:54,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:54,848 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:54,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:54,900 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:54,900 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,946 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,946 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,979 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:55,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:32:55,052 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:55,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:55,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:55,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:55,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:32:55,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,053 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:55,053 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:55,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:32:55,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:55,054 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:55,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,125 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:55,125 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,131 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:32:55,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,138 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:55,138 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:55,144 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:32:55,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,186 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:55,186 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:55,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:32:55,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:32:55,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:32:55,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:32:55,238 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:32:55,247 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:32:55,247 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,258 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:32:55,258 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:32:55,258 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:32:55,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 12:32:55,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:32:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,311 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:32:55,311 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,316 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:32:55,316 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:32:55,346 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:32:55,347 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 12:32:55,347 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-07-01 12:32:55,397 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 15 states and 21 transitions. Complement of second has 11 states. [2020-07-01 12:32:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 12:32:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:32:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-07-01 12:32:55,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:32:55,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 12:32:55,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 12:32:55,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 21 transitions. [2020-07-01 12:32:55,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 12:32:55,403 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2020-07-01 12:32:55,403 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 12:32:55,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 12:32:55,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-07-01 12:32:55,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,404 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-07-01 12:32:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-07-01 12:32:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 5. [2020-07-01 12:32:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:32:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-07-01 12:32:55,405 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-07-01 12:32:55,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:32:55,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:32:55,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:32:55,409 INFO L87 Difference]: Start difference. First operand 5 states and 7 transitions. Second operand 3 states. [2020-07-01 12:32:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:32:55,431 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2020-07-01 12:32:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:32:55,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2020-07-01 12:32:55,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:32:55,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 9 transitions. [2020-07-01 12:32:55,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 12:32:55,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 12:32:55,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-07-01 12:32:55,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,434 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-01 12:32:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-07-01 12:32:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-07-01 12:32:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 12:32:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-07-01 12:32:55,436 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 12:32:55,436 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 12:32:55,436 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:32:55,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-07-01 12:32:55,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:32:55,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:55,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:55,437 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:32:55,437 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:32:55,438 INFO L794 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 139#L10-2 [31] L10-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 134#L10 [2020-07-01 12:32:55,438 INFO L796 eck$LassoCheckResult]: Loop: 134#L10 [24] L10-->L10-2: Formula: (and (< 3 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 135#L10-2 [31] L10-2-->L10: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 134#L10 [2020-07-01 12:32:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 1 times [2020-07-01 12:32:55,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801086169] [2020-07-01 12:32:55,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,445 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1736, now seen corresponding path program 1 times [2020-07-01 12:32:55,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738968166] [2020-07-01 12:32:55,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1728653, now seen corresponding path program 2 times [2020-07-01 12:32:55,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143382434] [2020-07-01 12:32:55,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,462 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,479 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:55,480 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:55,480 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:55,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:55,480 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:55,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:55,480 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:55,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:32:55,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:55,481 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:55,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,547 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:55,547 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,556 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,595 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:55,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=4} Honda state: {ULTIMATE.start_main_~i~0=4} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,698 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:32:55,743 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:55,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:55,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:55,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:55,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:55,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:55,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:55,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 12:32:55,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:55,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:55,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:55,817 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:55,817 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,863 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 [2020-07-01 12:32:55,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 [2020-07-01 12:32:55,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,934 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 [2020-07-01 12:32:55,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:55,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,982 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=6} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 0, 0] Nus: [1, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,038 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,038 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:32:56,077 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,079 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,079 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,080 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,080 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,081 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:56 BasicIcfg [2020-07-01 12:32:56,093 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:32:56,095 INFO L168 Benchmark]: Toolchain (without parser) took 3042.37 ms. Allocated memory was 649.6 MB in the beginning and 756.0 MB in the end (delta: 106.4 MB). Free memory was 561.4 MB in the beginning and 701.0 MB in the end (delta: -139.7 MB). Peak memory consumption was 223.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,096 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:32:56,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.83 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 561.4 MB in the beginning and 656.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 691.0 MB. Free memory was 656.0 MB in the beginning and 653.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,097 INFO L168 Benchmark]: Boogie Preprocessor took 19.44 ms. Allocated memory is still 691.0 MB. Free memory was 653.8 MB in the beginning and 652.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,098 INFO L168 Benchmark]: RCFGBuilder took 219.32 ms. Allocated memory is still 691.0 MB. Free memory was 652.7 MB in the beginning and 639.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,098 INFO L168 Benchmark]: BlockEncodingV2 took 70.83 ms. Allocated memory is still 691.0 MB. Free memory was 639.1 MB in the beginning and 634.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,099 INFO L168 Benchmark]: TraceAbstraction took 145.07 ms. Allocated memory is still 691.0 MB. Free memory was 633.8 MB in the beginning and 625.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,099 INFO L168 Benchmark]: BuchiAutomizer took 2252.06 ms. Allocated memory was 691.0 MB in the beginning and 756.0 MB in the end (delta: 65.0 MB). Free memory was 625.1 MB in the beginning and 701.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 245.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.83 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 561.4 MB in the beginning and 656.0 MB in the end (delta: -94.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.08 ms. Allocated memory is still 691.0 MB. Free memory was 656.0 MB in the beginning and 653.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.44 ms. Allocated memory is still 691.0 MB. Free memory was 653.8 MB in the beginning and 652.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 219.32 ms. Allocated memory is still 691.0 MB. Free memory was 652.7 MB in the beginning and 639.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 70.83 ms. Allocated memory is still 691.0 MB. Free memory was 639.1 MB in the beginning and 634.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.07 ms. Allocated memory is still 691.0 MB. Free memory was 633.8 MB in the beginning and 625.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2252.06 ms. Allocated memory was 691.0 MB in the beginning and 756.0 MB in the end (delta: 65.0 MB). Free memory was 625.1 MB in the beginning and 701.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 245.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 14 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf94 smp100 dnf100 smp100 tf109 neg100 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 10]: Nontermination argument in form of an infinite program execution. [2020-07-01 12:32:56,113 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,113 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,113 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,114 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,114 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,114 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,115 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,115 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,115 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6179fabc=0, ~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, i=0} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6179fabc=0, ~unnamed0~0~true=1, \result=0, ~unnamed0~0~false=0, i=6} For i>1, the state at position i is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6179fabc=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, i=6 + sum_{k=0}^i 1} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [1, 0, 0] Mus: [1, 0] - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 0 Loop: [L10] COND TRUE i > 3 [L11] i = i+1 [L9] COND TRUE i > 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:32:49.797 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_BfRMnL/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:32:56.341 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check