/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:01:08,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:01:08,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:01:08,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:01:08,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:01:08,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:01:08,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:01:08,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:01:08,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:01:08,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:01:08,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:01:08,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:01:08,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:01:08,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:01:08,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:01:08,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:01:08,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:01:08,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:01:08,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:01:08,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:01:08,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:01:08,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:01:08,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:01:08,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:01:08,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:01:08,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:01:08,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:01:08,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:01:08,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:01:08,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:01:08,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:01:08,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:01:08,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:01:08,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:01:08,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:01:08,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:01:08,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:01:08,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:01:08,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:01:08,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:01:08,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:01:08,929 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:01:08,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:01:08,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:01:08,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:01:08,945 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:01:08,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:01:08,945 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:01:08,945 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:01:08,946 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:01:08,946 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:01:08,946 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:01:08,946 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:01:08,946 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:01:08,946 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:01:08,947 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:01:08,947 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:08,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:01:08,947 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:01:08,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:01:08,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:01:08,948 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:01:08,948 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:01:08,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:01:08,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:01:08,948 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:01:08,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:01:08,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:01:08,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:01:08,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:01:08,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:01:09,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:01:09,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:01:09,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:01:09,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:01:09,137 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:01:09,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:01:09,208 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Ulk0V3/tmp/9cb57dde60e14691b81fb24d80b1d875/FLAGd0b9345bc [2020-07-01 11:01:09,550 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:01:09,551 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:01:09,558 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Ulk0V3/tmp/9cb57dde60e14691b81fb24d80b1d875/FLAGd0b9345bc [2020-07-01 11:01:09,991 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_Ulk0V3/tmp/9cb57dde60e14691b81fb24d80b1d875 [2020-07-01 11:01:10,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:01:10,004 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:01:10,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:01:10,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:01:10,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:01:10,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:01:09" (1/1) ... [2020-07-01 11:01:10,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ce2fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:01:09" (1/1) ... [2020-07-01 11:01:10,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:01:10,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:01:10,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:01:10,264 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:01:10,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:01:10,294 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:01:10,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10 WrapperNode [2020-07-01 11:01:10,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:01:10,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:01:10,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:01:10,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:01:10,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:01:10,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:01:10,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:01:10,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:01:10,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:01:10,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:01:10,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:01:10,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:01:10,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:01:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:01:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:01:10,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:01:10,577 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:01:10,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:01:10 BoogieIcfgContainer [2020-07-01 11:01:10,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:01:10,581 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:01:10,581 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:01:10,583 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:01:10,584 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:01:10" (1/1) ... [2020-07-01 11:01:10,597 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 11:01:10,598 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:01:10,599 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:01:10,600 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:01:10,600 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:01:10,602 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:01:10,602 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:01:10,603 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:01:10,616 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:01:10,623 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 11:01:10,628 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:01:10,630 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:01:10,645 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 11:01:10,647 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 11:01:10,648 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:01:10,648 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:01:10,649 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:01:10,649 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:01:10,649 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 11:01:10,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:01:10 BasicIcfg [2020-07-01 11:01:10,650 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:01:10,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:01:10,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:01:10,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:01:10,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:01:09" (1/4) ... [2020-07-01 11:01:10,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62887d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (2/4) ... [2020-07-01 11:01:10,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62887d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:01:10" (3/4) ... [2020-07-01 11:01:10,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62887d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:01:10" (4/4) ... [2020-07-01 11:01:10,659 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:01:10,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:01:10,676 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:01:10,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:01:10,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:01:10,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:01:10,713 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:01:10,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:01:10,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:01:10,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:01:10,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:01:10,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:01:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:01:10,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:01:10,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:01:10,789 INFO L271 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: true [2020-07-01 11:01:10,790 INFO L271 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-07-01 11:01:10,790 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:01:10,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:01:10 BasicIcfg [2020-07-01 11:01:10,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:01:10,799 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:01:10,799 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:01:10,802 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:01:10,803 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:01:10,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:01:09" (1/5) ... [2020-07-01 11:01:10,804 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ceb116d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:01:10,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:01:10" (2/5) ... [2020-07-01 11:01:10,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ceb116d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:01:10,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:01:10" (3/5) ... [2020-07-01 11:01:10,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ceb116d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:01:10,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:01:10" (4/5) ... [2020-07-01 11:01:10,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ceb116d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:01:10, skipping insertion in model container [2020-07-01 11:01:10,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:01:10,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:01:10" (5/5) ... [2020-07-01 11:01:10,808 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:01:10,837 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:01:10,837 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:01:10,837 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:01:10,837 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:01:10,837 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:01:10,837 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:01:10,838 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:01:10,838 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:01:10,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:01:10,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:01:10,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:01:10,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:01:10,864 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:01:10,864 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:01:10,864 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:01:10,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:01:10,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:01:10,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:01:10,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:01:10,865 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:01:10,865 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:01:10,870 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 11:01:10,871 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [33] L17-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 1) (<= 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 5#L19-2true [45] L19-2-->L17-2: Formula: (and (= (+ v_ULTIMATE.start_main_~x~0_14 (- 1)) v_ULTIMATE.start_main_~x~0_13) (<= v_ULTIMATE.start_main_~x~0_14 v_ULTIMATE.start_main_~y~0_10)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 3#L17-2true [2020-07-01 11:01:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 11:01:10,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:10,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967287526] [2020-07-01 11:01:10,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,960 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2029, now seen corresponding path program 1 times [2020-07-01 11:01:10,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:10,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123199678] [2020-07-01 11:01:10,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash 63533, now seen corresponding path program 1 times [2020-07-01 11:01:10,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:10,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575454117] [2020-07-01 11:01:10,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:10,993 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:11,041 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:01:11,042 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:01:11,042 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:01:11,042 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:01:11,042 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:01:11,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:11,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:01:11,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:01:11,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:01:11,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:01:11,044 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:01:11,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:01:11,692 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:11,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:11,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:11,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:01:11,709 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:11,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:11,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:11,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:01:11,747 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:11,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:11,780 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:11,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:01:11,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:11,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:01:11,861 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:01:11,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:01:11,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:01:11,861 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:01:11,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:01:11,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:11,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:01:11,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:01:11,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:01:11,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:01:11,862 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:01:11,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:11,952 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:01:11,957 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:11,962 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:01:11,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:01:11,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:01:11,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:01:11,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:01:11,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:01:11,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:01:11,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:01:12,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:01:12,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:01:12,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:01:12,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:01:12,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:01:12,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:01:12,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:01:12,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:01:12,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:01:12,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:01:12,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:01:12,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:01:12,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:01:12,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:01:12,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:01:12,067 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:01:12,067 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,073 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:01:12,074 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:01:12,074 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:01:12,075 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-07-01 11:01:12,109 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:01:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:01:12,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:01:12,149 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:01:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:01:12,161 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:01:12,162 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:01:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:01:12,210 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:01:12,215 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:01:12,217 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:01:12,254 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-07-01 11:01:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:01:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:01:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 11:01:12,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:01:12,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:12,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:01:12,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:12,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:01:12,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:12,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-07-01 11:01:12,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:01:12,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-07-01 11:01:12,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 11:01:12,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 11:01:12,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-07-01 11:01:12,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:01:12,276 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 11:01:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-07-01 11:01:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-07-01 11:01:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:01:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-01 11:01:12,304 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 11:01:12,304 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 11:01:12,305 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:01:12,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-07-01 11:01:12,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:01:12,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:01:12,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:01:12,306 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:01:12,306 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:01:12,306 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 42#L17-2 [33] L17-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 1) (<= 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 44#L19-2 [2020-07-01 11:01:12,306 INFO L796 eck$LassoCheckResult]: Loop: 44#L19-2 [38] L19-2-->L19-2: Formula: (and (< v_ULTIMATE.start_main_~y~0_8 v_ULTIMATE.start_main_~x~0_7) (= v_ULTIMATE.start_main_~y~0_7 (* v_ULTIMATE.start_main_~y~0_8 2))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 44#L19-2 [2020-07-01 11:01:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:12,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2020-07-01 11:01:12,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:12,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044283031] [2020-07-01 11:01:12,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,316 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:12,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:12,316 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-07-01 11:01:12,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:12,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703085435] [2020-07-01 11:01:12,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:12,324 INFO L82 PathProgramCache]: Analyzing trace with hash 63526, now seen corresponding path program 1 times [2020-07-01 11:01:12,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:01:12,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579002743] [2020-07-01 11:01:12,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:01:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:01:12,334 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:01:12,372 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:01:12,372 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:01:12,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:01:12,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:01:12,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:01:12,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:12,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:01:12,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:01:12,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-07-01 11:01:12,373 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:01:12,373 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:01:12,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,477 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:01:12,477 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:12,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:12,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:12,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:01:12,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 11:01:12,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:12,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:12,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:01:12,532 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/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:12,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:12,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:12,572 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:01:12,572 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/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:12,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:01:12,607 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:01:12,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:01:12,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:01:12,755 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:01:12,757 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:01:12,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:01:12,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:01:12,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:01:12,758 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:01:12,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:01:12,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:01:12,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-07-01 11:01:12,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:01:12,759 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:01:12,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:01:12,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:01:12,866 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:01:12,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:01:12,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:01:12,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:01:12,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:01:12,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:01:12,880 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:01:12,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:01:12,900 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-07-01 11:01:12,900 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:01:12,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:01:12,912 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 11:01:12,912 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:01:12,912 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-07-01 11:01:12,946 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 11:01:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:01:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:01:12,989 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:01:12,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:01:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:01:13,000 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:01:13,000 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:01:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:01:13,013 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:01:13,013 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:01:13,014 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-07-01 11:01:13,068 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 17 states and 26 transitions. Complement of second has 10 states. [2020-07-01 11:01:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 11:01:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:01:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-07-01 11:01:13,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 11:01:13,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:13,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 11:01:13,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:13,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 11:01:13,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:01:13,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2020-07-01 11:01:13,074 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:01:13,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-07-01 11:01:13,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:01:13,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:01:13,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:01:13,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:01:13,075 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:01:13,075 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:01:13,075 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:01:13,075 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:01:13,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:01:13,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:01:13,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:01:13,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:01:13 BasicIcfg [2020-07-01 11:01:13,081 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:01:13,084 INFO L168 Benchmark]: Toolchain (without parser) took 3079.04 ms. Allocated memory was 649.6 MB in the beginning and 676.3 MB in the end (delta: 26.7 MB). Free memory was 561.6 MB in the beginning and 423.4 MB in the end (delta: 138.2 MB). Peak memory consumption was 164.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,084 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 588.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:01:13,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.98 ms. Allocated memory was 649.6 MB in the beginning and 676.3 MB in the end (delta: 26.7 MB). Free memory was 561.6 MB in the beginning and 639.7 MB in the end (delta: -78.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 676.3 MB. Free memory was 639.7 MB in the beginning and 638.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,086 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 676.3 MB. Free memory was 638.3 MB in the beginning and 637.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,087 INFO L168 Benchmark]: RCFGBuilder took 230.65 ms. Allocated memory is still 676.3 MB. Free memory was 637.0 MB in the beginning and 622.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,088 INFO L168 Benchmark]: BlockEncodingV2 took 69.17 ms. Allocated memory is still 676.3 MB. Free memory was 622.7 MB in the beginning and 617.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,088 INFO L168 Benchmark]: TraceAbstraction took 147.06 ms. Allocated memory is still 676.3 MB. Free memory was 617.3 MB in the beginning and 607.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,089 INFO L168 Benchmark]: BuchiAutomizer took 2282.26 ms. Allocated memory is still 676.3 MB. Free memory was 607.8 MB in the beginning and 423.4 MB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:01:13,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 588.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 289.98 ms. Allocated memory was 649.6 MB in the beginning and 676.3 MB in the end (delta: 26.7 MB). Free memory was 561.6 MB in the beginning and 639.7 MB in the end (delta: -78.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 676.3 MB. Free memory was 639.7 MB in the beginning and 638.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 676.3 MB. Free memory was 638.3 MB in the beginning and 637.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 230.65 ms. Allocated memory is still 676.3 MB. Free memory was 637.0 MB in the beginning and 622.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 69.17 ms. Allocated memory is still 676.3 MB. Free memory was 622.7 MB in the beginning and 617.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.06 ms. Allocated memory is still 676.3 MB. Free memory was 617.3 MB in the beginning and 607.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2282.26 ms. Allocated memory is still 676.3 MB. Free memory was 607.8 MB in the beginning and 423.4 MB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 16 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax175 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf92 smp100 dnf100 smp100 tf104 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:01:06.692 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_Ulk0V3/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:01:13.728 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check