/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:50:22,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:50:22,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:50:22,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:50:22,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:50:22,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:50:22,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:50:22,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:50:22,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:50:22,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:50:22,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:50:22,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:50:22,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:50:22,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:50:22,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:50:22,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:50:22,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:50:22,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:50:22,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:50:22,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:50:22,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:50:22,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:50:22,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:50:22,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:50:22,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:50:22,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:50:22,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:50:22,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:50:22,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:50:22,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:50:22,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:50:22,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:50:22,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:50:22,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:50:22,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:50:22,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:50:22,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:50:22,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:50:22,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:50:22,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:50:22,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:50:22,870 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:50:22,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:50:22,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:50:22,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:50:22,886 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:50:22,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:50:22,886 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:50:22,886 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:50:22,886 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:50:22,887 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:50:22,888 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:50:22,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:50:22,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:50:22,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:50:22,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:50:22,888 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:50:22,889 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:50:22,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:50:22,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:50:22,889 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:50:22,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:50:22,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:50:22,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:50:22,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:50:22,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:50:23,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:50:23,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:50:23,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:50:23,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:50:23,074 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:50:23,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:50:23,135 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_j6Y5_Y/tmp/8ed23ce6fcb34c5cad6457f979f0a698/FLAG229b48967 [2020-07-01 11:50:23,468 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:50:23,469 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:50:23,475 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_j6Y5_Y/tmp/8ed23ce6fcb34c5cad6457f979f0a698/FLAG229b48967 [2020-07-01 11:50:23,889 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_j6Y5_Y/tmp/8ed23ce6fcb34c5cad6457f979f0a698 [2020-07-01 11:50:23,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:50:23,901 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:50:23,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:50:23,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:50:23,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:50:23,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:50:23" (1/1) ... [2020-07-01 11:50:23,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ecf2fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:23, skipping insertion in model container [2020-07-01 11:50:23,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:50:23" (1/1) ... [2020-07-01 11:50:23,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:50:23,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:50:24,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:50:24,162 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:50:24,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:50:24,193 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:50:24,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24 WrapperNode [2020-07-01 11:50:24,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:50:24,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:50:24,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:50:24,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:50:24,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:50:24,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:50:24,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:50:24,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:50:24,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:50:24,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:50:24,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:50:24,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:50:24,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (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 11:50:24,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:50:24,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:50:24,472 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:50:24,472 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:50:24,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:50:24 BoogieIcfgContainer [2020-07-01 11:50:24,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:50:24,477 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:50:24,477 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:50:24,479 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:50:24,480 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:50:24" (1/1) ... [2020-07-01 11:50:24,492 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 11:50:24,493 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:50:24,494 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:50:24,494 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:50:24,495 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:50:24,512 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:50:24,513 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:50:24,513 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:50:24,527 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:50:24,541 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:50:24,546 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:50:24,548 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:50:24,560 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 11:50:24,564 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 11:50:24,565 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:50:24,565 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:50:24,566 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:50:24,566 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:50:24,566 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 11:50:24,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:50:24 BasicIcfg [2020-07-01 11:50:24,567 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:50:24,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:50:24,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:50:24,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:50:24,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:50:23" (1/4) ... [2020-07-01 11:50:24,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68328cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (2/4) ... [2020-07-01 11:50:24,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68328cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:50:24" (3/4) ... [2020-07-01 11:50:24,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68328cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:50:24" (4/4) ... [2020-07-01 11:50:24,576 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:50:24,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:50:24,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:50:24,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:50:24,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:50:24,629 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:50:24,630 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:50:24,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:50:24,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:50:24,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:50:24,630 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:50:24,630 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:50:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:50:24,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:50:24,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:50:24,705 INFO L271 CegarLoopResult]: At program point L18-2(lines 17 23) the Hoare annotation is: true [2020-07-01 11:50:24,705 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:50:24,705 INFO L268 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-07-01 11:50:24,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:50:24 BasicIcfg [2020-07-01 11:50:24,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:50:24,714 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:50:24,715 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:50:24,718 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:50:24,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:50:24,719 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:50:23" (1/5) ... [2020-07-01 11:50:24,719 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fe84533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:50:24,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:50:24" (2/5) ... [2020-07-01 11:50:24,720 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fe84533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:50:24,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:50:24" (3/5) ... [2020-07-01 11:50:24,721 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fe84533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,721 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:50:24,721 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:50:24" (4/5) ... [2020-07-01 11:50:24,721 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fe84533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:50:24, skipping insertion in model container [2020-07-01 11:50:24,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:50:24,722 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:50:24" (5/5) ... [2020-07-01 11:50:24,731 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:50:24,760 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:50:24,760 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:50:24,760 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:50:24,761 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:50:24,761 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:50:24,761 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:50:24,761 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:50:24,761 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:50:24,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:50:24,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:50:24,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:50:24,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:50:24,796 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:50:24,797 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:50:24,797 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:50:24,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:50:24,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:50:24,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:50:24,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:50:24,798 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:50:24,798 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:50:24,803 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [25] ULTIMATE.startENTRY-->L18-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 4#L18-2true [2020-07-01 11:50:24,803 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-2true [28] L18-2-->L18: Formula: (< v_ULTIMATE.start_main_~i~0_7 255) 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[] 5#L18true [35] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1)) (> 0 |v_ULTIMATE.start_main_#t~nondet1_3|)) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~i~0] 4#L18-2true [2020-07-01 11:50:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:50:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-07-01 11:50:24,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:50:24,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261702737] [2020-07-01 11:50:24,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:50:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,897 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:50:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:50:24,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1864, now seen corresponding path program 1 times [2020-07-01 11:50:24,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:50:24,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747984833] [2020-07-01 11:50:24,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:50:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,920 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:50:24,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:50:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash 54719, now seen corresponding path program 1 times [2020-07-01 11:50:24,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:50:24,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096448076] [2020-07-01 11:50:24,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:50:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:50:24,942 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:50:24,986 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:50:24,986 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:50:24,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:50:24,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:50:24,987 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:50:24,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:50:24,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:50:24,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:50:24,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:50:24,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:50:24,988 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:50:25,007 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 11:50:25,018 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 11:50:25,023 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 11:50:25,034 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 11:50:25,102 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:50:25,103 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 11:50:25,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:50:25,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:50:25,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:50:25,160 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 11:50:25,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:50:25,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:50:25,200 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:50:25,200 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 11:50:25,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:50:25,232 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 11:50:25,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:50:25,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:50:25,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:50:25,308 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:50:25,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:50:25,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:50:25,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:50:25,308 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:50:25,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:50:25,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:50:25,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:50:25,309 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:50:25,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:50:25,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:50:25,311 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 11:50:25,322 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 11:50:25,327 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 11:50:25,332 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 11:50:25,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:50:25,406 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 11:50:25,410 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 11:50:25,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:50:25,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:50:25,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:50:25,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:50:25,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:50:25,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:50:25,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:50:25,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:50:25,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:50:25,432 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 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 11:50:25,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:50:25,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:50:25,440 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:50:25,441 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 509 Supporting invariants [] [2020-07-01 11:50:25,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:50:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:50:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:50:25,522 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:50:25,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:50:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:50:25,533 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:50:25,534 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:50:25,550 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 11:50:25,576 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:50:25,581 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 11:50:25,582 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:50:25,618 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 5 states and 8 transitions. Complement of second has 4 states. [2020-07-01 11:50:25,618 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 11:50:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:50:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-07-01 11:50:25,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:50:25,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:50:25,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:50:25,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:50:25,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:50:25,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:50:25,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 8 transitions. [2020-07-01 11:50:25,632 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:50:25,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 0 states and 0 transitions. [2020-07-01 11:50:25,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:50:25,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:50:25,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:50:25,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:50:25,637 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:50:25,637 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:50:25,637 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:50:25,637 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:50:25,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:50:25,638 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:50:25,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:50:25,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:50:25 BasicIcfg [2020-07-01 11:50:25,644 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:50:25,646 INFO L168 Benchmark]: Toolchain (without parser) took 1744.22 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 554.9 MB in the beginning and 540.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 55.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,647 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:50:25,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.37 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 554.9 MB in the beginning and 654.3 MB in the end (delta: -99.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 690.5 MB. Free memory was 654.3 MB in the beginning and 652.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,649 INFO L168 Benchmark]: Boogie Preprocessor took 19.55 ms. Allocated memory is still 690.5 MB. Free memory was 652.2 MB in the beginning and 651.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,649 INFO L168 Benchmark]: RCFGBuilder took 227.69 ms. Allocated memory is still 690.5 MB. Free memory was 651.1 MB in the beginning and 637.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,650 INFO L168 Benchmark]: BlockEncodingV2 took 90.33 ms. Allocated memory is still 690.5 MB. Free memory was 637.9 MB in the beginning and 632.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,651 INFO L168 Benchmark]: TraceAbstraction took 145.70 ms. Allocated memory is still 690.5 MB. Free memory was 631.4 MB in the beginning and 623.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,651 INFO L168 Benchmark]: BuchiAutomizer took 929.25 ms. Allocated memory is still 690.5 MB. Free memory was 623.7 MB in the beginning and 540.8 MB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:50:25,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 291.37 ms. Allocated memory was 649.6 MB in the beginning and 690.5 MB in the end (delta: 40.9 MB). Free memory was 554.9 MB in the beginning and 654.3 MB in the end (delta: -99.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 690.5 MB. Free memory was 654.3 MB in the beginning and 652.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.55 ms. Allocated memory is still 690.5 MB. Free memory was 652.2 MB in the beginning and 651.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 227.69 ms. Allocated memory is still 690.5 MB. Free memory was 651.1 MB in the beginning and 637.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 90.33 ms. Allocated memory is still 690.5 MB. Free memory was 637.9 MB in the beginning and 632.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.70 ms. Allocated memory is still 690.5 MB. Free memory was 631.4 MB in the beginning and 623.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 929.25 ms. Allocated memory is still 690.5 MB. Free memory was 623.7 MB in the beginning and 540.8 MB in the end (delta: 82.9 MB). Peak memory consumption was 82.9 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 - 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 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function -2 * i + 509 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 3 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:50:20.642 ----------------------------------------------- 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_j6Y5_Y/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:50:26.090 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check